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Author SHA1 Message Date
cvs2svn b7ce19d71a This commit was manufactured by cvs2svn to create tag 'milter-0_8_2'.
Sprout from bmsi 2005-05-31 18:23:49 UTC Stuart Gathman <stuart@gathman.org> 'Development changes since 0.7.2'
Cherrypick from master 2005-07-20 14:56:38 UTC Stuart Gathman <stuart@gathman.org> 'Handle corrupt ZIP attachments':
    COPYING
    CREDITS
    MANIFEST.in
    Milter/__init__.py
    Milter/dsn.py
    Milter/dynip.py
    NEWS
    TODO
    bms.py
    faq.html
    milter.cfg
    milter.html
    milter.spec
    miltermodule.c
    mime.py
    setup.cfg
    setup.py
    softfail.txt
    spf.py
    spfquery.py
    strike3.txt
    test/zip1
    test/zip2
    test/zip3
    test/ziploop
    testmime.py
2005-07-20 14:56:39 +00:00
Stuart Gathman 9fb3ad70d4 Development changes since 0.7.2 2005-05-31 18:23:49 +00:00
Stuart Gathman 20fb6efab0 Release 0.7.2 2005-05-31 18:10:47 +00:00
Stuart Gathman 16dea6e187 Release 0.7.1 2005-05-31 18:09:06 +00:00
Stuart Gathman 802dc01c84 Release 0.7.0 2005-05-31 18:08:20 +00:00
35 changed files with 3436 additions and 1025 deletions
+340
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@@ -0,0 +1,340 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
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NO WARRANTY
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FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.
+6
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@@ -9,6 +9,9 @@ Other contributors:
Terence Way Terence Way
for providing a Python port of SPF for providing a Python port of SPF
Scott Kitterman
for doing lots of testing and debugging of SPF against draft standard,
and for putting up a web page that validates SPF records using spf.py
Alexander Kourakos Alexander Kourakos
for plugging several memory leaks for plugging several memory leaks
George Graf at Vienna University of Economics and Business Administration George Graf at Vienna University of Economics and Business Administration
@@ -22,6 +25,9 @@ John Draper
then pointing out that it would be easier to just write the MTA in Python. then pointing out that it would be easier to just write the MTA in Python.
Eric S. Johansson Eric S. Johansson
for helpful design discussions while working on camram for helpful design discussions while working on camram
Alex Savguira
for finding bugs with international headers and
suggesting the scan_zip option.
Business Management Systems - http://www.bmsi.com Business Management Systems - http://www.bmsi.com
for hosting the website, and providing paying clients who need milter service for hosting the website, and providing paying clients who need milter service
so I can work on it as part of my day job. so I can work on it as part of my day job.
+6
View File
@@ -8,14 +8,20 @@ include testsample.py
include testmime.py include testmime.py
include testbms.py include testbms.py
include testdspam.py include testdspam.py
include rejects.py
include bms.py include bms.py
include spf.py include spf.py
include cid2spf.py
include spfquery.py include spfquery.py
include test.py include test.py
include sample.py include sample.py
include test/* include test/*
include Milter/*.py
include *.spec include *.spec
include start.sh include start.sh
include milter.rc include milter.rc
include milter.rc7 include milter.rc7
include milter.cfg include milter.cfg
include rhsbl.m4
include softfail.txt
include strike3.txt
+9 -8
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@@ -8,15 +8,12 @@ import milter
import thread import thread
from milter import ACCEPT,CONTINUE,REJECT,DISCARD,TEMPFAIL, \ from milter import ACCEPT,CONTINUE,REJECT,DISCARD,TEMPFAIL, \
set_flags, setdbg, \ set_flags, setdbg, setbacklog, settimeout, \
ADDHDRS, CHGBODY, ADDRCPT, DELRCPT, CHGHDRS, \ ADDHDRS, CHGBODY, ADDRCPT, DELRCPT, CHGHDRS, \
V1_ACTS, V2_ACTS, CURR_ACTS V1_ACTS, V2_ACTS, CURR_ACTS
try: try: from milter import QUARANTINE
from milter import QUARANTINE except: pass
except:
#print 'No QUARANTINE support'
pass
_seq_lock = thread.allocate_lock() _seq_lock = thread.allocate_lock()
_seq = 0 _seq = 0
@@ -100,8 +97,10 @@ class Milter:
def getsymval(self,sym): def getsymval(self,sym):
return self.__ctx.getsymval(sym) return self.__ctx.getsymval(sym)
def setreply(self,rcode,xcode,msg): # If sendmail does not support setmlreply, then only the
return self.__ctx.setreply(rcode,xcode,msg) # first msg line is used.
def setreply(self,rcode,xcode=None,msg=None,*ml):
return self.__ctx.setreply(rcode,xcode,msg,*ml)
# Milter methods which can only be called from eom callback. # Milter methods which can only be called from eom callback.
def addheader(self,field,value): def addheader(self,field,value):
@@ -119,6 +118,8 @@ class Milter:
def replacebody(self,body): def replacebody(self,body):
return self.__ctx.replacebody(body) return self.__ctx.replacebody(body)
# When quarantined, a message goes into the mailq as if to be delivered,
# but delivery is deferred until the message is unquarantined.
def quarantine(self,reason): def quarantine(self,reason):
return self.__ctx.quarantine(reason) return self.__ctx.quarantine(reason)
+220
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@@ -0,0 +1,220 @@
# Author: Stuart D. Gathman <stuart@bmsi.com>
# Copyright 2001 Business Management Systems, Inc.
# This code is under the GNU General Public License. See COPYING for details.
# A thin OO wrapper for the milter module
import os
import milter
import thread
from milter import ACCEPT,CONTINUE,REJECT,DISCARD,TEMPFAIL, \
set_flags, setdbg, setbacklog, settimeout, \
ADDHDRS, CHGBODY, ADDRCPT, DELRCPT, CHGHDRS, \
V1_ACTS, V2_ACTS, CURR_ACTS
try: from milter import QUARANTINE
except: pass
_seq_lock = thread.allocate_lock()
_seq = 0
def uniqueID():
"""Return a sequence number unique to this process.
"""
global _seq
_seq_lock.acquire()
seqno = _seq = _seq + 1
_seq_lock.release()
return seqno
class Milter:
"""A simple class interface to the milter module.
"""
def _setctx(self,ctx):
self.__ctx = ctx
if ctx:
ctx.setpriv(self)
# user replaceable callbacks
def log(self,*msg):
print 'Milter:',
for i in msg: print i,
print
def connect(self,hostname,unused,hostaddr):
"Called for each connection to sendmail."
self.log("connect from %s at %s" % (hostname,hostaddr))
return CONTINUE
def hello(self,hostname):
"Called after the HELO command."
self.log("hello from %s" % hostname)
return CONTINUE
def envfrom(self,f,*str):
"""Called to begin each message.
f -> string message sender
str -> tuple additional ESMTP parameters
"""
self.log("mail from",f,str)
return CONTINUE
def envrcpt(self,to,*str):
"Called for each message recipient."
self.log("rcpt to",to,str)
return CONTINUE
def header(self,field,value):
"Called for each message header."
self.log("%s: %s" % (field,value))
return CONTINUE
def eoh(self):
"Called after all headers are processed."
self.log("eoh")
return CONTINUE
def body(self,unused):
"Called to transfer the message body."
return CONTINUE
def eom(self):
"Called at the end of message."
self.log("eom")
return CONTINUE
def abort(self):
"Called if the connection is terminated abnormally."
self.log("abort")
return CONTINUE
def close(self):
"Called at the end of connection, even if aborted."
self.log("close")
return CONTINUE
# Milter methods which can be invoked from callbacks
def getsymval(self,sym):
return self.__ctx.getsymval(sym)
# If sendmail does not support setmlreply, then only the
# first msg line is used.
def setreply(self,rcode,xcode=None,msg=None,*ml):
return self.__ctx.setreply(rcode,xcode,msg,*ml)
# Milter methods which can only be called from eom callback.
def addheader(self,field,value):
return self.__ctx.addheader(field,value)
def chgheader(self,field,idx,value):
return self.__ctx.chgheader(field,idx,value)
def addrcpt(self,rcpt):
return self.__ctx.addrcpt(rcpt)
def delrcpt(self,rcpt):
return self.__ctx.delrcpt(rcpt)
def replacebody(self,body):
return self.__ctx.replacebody(body)
# When quarantined, a message goes into the mailq as if to be delivered,
# but delivery is deferred until the message is unquarantined.
def quarantine(self,reason):
return self.__ctx.quarantine(reason)
def progress(self):
return self.__ctx.progress()
factory = Milter
def connectcallback(ctx,hostname,family,hostaddr):
m = factory()
m._setctx(ctx)
return m.connect(hostname,family,hostaddr)
def closecallback(ctx):
m = ctx.getpriv()
if not m: return CONTINUE
rc = m.close()
m._setctx(None) # release milterContext
return rc
def dictfromlist(args):
"Convert ESMTP parm list to keyword dictionary."
kw = {}
for s in args:
pos = s.find('=')
if pos > 0:
kw[s[:pos].upper()] = s[pos+1:]
return kw
def envcallback(c,args):
"""Call function c with ESMTP parms converted to keyword parameters.
Can be used in the envfrom and/or envrcpt callbacks to process
ESMTP parameters as python keyword parameters."""
kw = {}
pargs = [args[0]]
for s in args[1:]:
pos = s.find('=')
if pos > 0:
kw[s[:pos].upper()] = s[pos+1:]
else:
pargs.append(s)
return c(*pargs,**kw)
def runmilter(name,socketname,timeout = 0):
# This bit is here on the assumption that you will be starting this filter
# before sendmail. If sendmail is not running and the socket already exists,
# libmilter will throw a warning. If sendmail is running, this is still
# safe if there are no messages currently being processed. It's safer to
# shutdown sendmail, kill the filter process, restart the filter, and then
# restart sendmail.
pos = socketname.find(':')
if pos > 1:
s = socketname[:pos]
fname = socketname[pos+1:]
else:
s = "unix"
fname = socketname
if s == "unix" or s == "local":
print "Removing %s" % fname
try:
os.unlink(fname)
except:
pass
# The default flags set include everything
# milter.set_flags(milter.ADDHDRS)
milter.set_connect_callback(connectcallback)
milter.set_helo_callback(lambda ctx, host: ctx.getpriv().hello(host))
# For envfrom and envrcpt, we would like to convert ESMTP parms to keyword
# parms, but then all existing users would have to include **kw to accept
# arbitrary keywords without crashing. We do provide envcallback and
# dictfromlist to make parsing the ESMTP args convenient.
milter.set_envfrom_callback(lambda ctx,*str: ctx.getpriv().envfrom(*str))
milter.set_envrcpt_callback(lambda ctx,*str: ctx.getpriv().envrcpt(*str))
milter.set_header_callback(lambda ctx,fld,val: ctx.getpriv().header(fld,val))
milter.set_eoh_callback(lambda ctx: ctx.getpriv().eoh())
milter.set_body_callback(lambda ctx,chunk: ctx.getpriv().body(chunk))
milter.set_eom_callback(lambda ctx: ctx.getpriv().eom())
milter.set_abort_callback(lambda ctx: ctx.getpriv().abort())
milter.set_close_callback(closecallback)
milter.setconn(socketname)
if timeout > 0: milter.settimeout(timeout)
# The name *must* match the X line in sendmail.cf (supposedly)
milter.register(name)
start_seq = _seq
try:
milter.main()
except milter.error:
if start_seq == _seq: raise # couldn't start
# milter has been running for a while, but now it can't start new threads
raise milter.error("out of thread resources")
__all__ = globals().copy()
for priv in ('os','milter','thread','factory','_seq','_seq_lock'):
del __all__[priv]
__all__ = __all__.keys()
+188
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@@ -0,0 +1,188 @@
# Author: Stuart D. Gathman <stuart@bmsi.com>
# Copyright 2005 Business Management Systems, Inc.
# This code is under the GNU General Public License. See COPYING for details.
# Send DSNs, do call back verification,
# and generate DSN messages from a template
import smtplib
import spf
import socket
from email.Message import Message
nospf_msg = """Subject: Critical mail server configuration error
This is an automatically generated Delivery Status Notification.
THIS IS A WARNING MESSAGE ONLY.
YOU DO *NOT* NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipients has been delayed.
%(rcpt)s
Subject: %(subject)s
Someone at IP address %(connectip)s sent an email claiming
to be from %(sender)s.
If that wasn't you, then your domain, %(sender_domain)s,
was forged - i.e. used without your knowlege or authorization by
someone attempting to steal your mail identity. This is a very
serious problem, and you need to provide authentication for your
SMTP (email) servers to prevent criminals from forging your
domain. The simplest step is usually to publish an SPF record
with your Sender Policy.
For more information, see: http://spfhelp.net
I hate to annoy you with a DSN (Delivery Status
Notification) from a possibly forged email, but since you
have not published a sender policy, there is no other way
of bringing this to your attention.
If it *was* you that sent the email, then your email domain
or configuration is in error. If you don't know anything
about mail servers, then pass this on to your SMTP (mail)
server administrator. We have accepted the email anyway, in
case it is important, but we couldn't find anything about
the mail submitter at %(connectip)s to distinguish it from a
zombie (compromised/infected computer - usually a Windows
PC). There was no PTR record for its IP address (PTR names
that contain the IP address don't count). RFC2821 requires
that your hello name be a FQN (Fully Qualified domain Name,
i.e. at least one dot) that resolves to the IP address of
the mail sender. In addition, just like for PTR, we don't
accept a helo name that contains the IP, since this doesn't
help to identify you. The hello name you used,
%(heloname)s, was invalid.
Furthermore, there was no SPF record for the sending domain
%(sender_domain)s. We even tried to find its IP in any A or
MX records for your domain, but that failed also. We really
should reject mail from anonymous mail clients, but in case
it is important, we are accepting it anyway.
We are sending you this message to alert you to the fact that
Either - Someone is forging your domain.
Or - You have problems with your email configuration.
Or - Possibly both.
If you need further assistance, please do not hesitate to
contact me again.
Kind regards,
postmaster@%(receiver)s
"""
softfail_msg = """Subject: SPF softfail (POSSIBLE FORGERY)
This is an automatically generated Delivery Status Notification.
THIS IS A WARNING MESSAGE ONLY.
YOU DO *NOT* NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipients has been delayed.
%(rcpt)s
Subject: %(subject)s
Received-SPF: %(spf_result)s
"""
def send_dsn(mailfrom,receiver,msg=None):
"""Send DSN. If msg is None, do callback verification.
Mailfrom is original sender we are sending DSN or CBV to.
Receiver is the MTA sending the DSN.
Return None for success or (code,msg) for failure."""
user,domain = mailfrom.split('@')
q = spf.query(None,None,None)
mxlist = q.dns(domain,'MX')
if not mxlist:
mxlist = (0,domain),
else:
mxlist.sort()
smtp = smtplib.SMTP()
for prior,host in mxlist:
try:
smtp.connect(host)
code,resp = smtp.helo(receiver)
# some wiley spammers have MX records that resolve to 127.0.0.1
if resp.split()[0] == receiver:
return (553,'Fraudulent MX for %s' % domain)
if not (200 <= code <= 299):
raise smtplib.SMTPHeloError(code, resp)
if msg:
try:
smtp.sendmail('<>',mailfrom,msg)
except smtplib.SMTPSenderRefused:
# does not accept DSN, try postmaster (at the risk of mail loops)
smtp.sendmail('<postmaster@%s>'%receiver,mailfrom,msg)
else: # CBV
code,resp = smtp.docmd('MAIL FROM: <>')
if code != 250:
raise smtplib.SMTPSenderRefused(code, resp, '<>')
code,resp = smtp.rcpt(mailfrom)
if code not in (250,251):
return (code,resp) # permanent error
smtp.quit()
return None # success
except smtplib.SMTPRecipientsRefused,x:
return x.recipients[mailfrom] # permanent error
except smtplib.SMTPSenderRefused,x:
return x.args[:2] # does not accept DSN
except smtplib.SMTPDataError,x:
return x.args # permanent error
except smtplib.SMTPException:
pass # any other error, try next MX
except socket.error:
pass # MX didn't accept connections, try next one
smtp.close()
return (450,'No MX servers available') # temp error
def create_msg(q,rcptlist,origmsg=None,template=None):
"Create a DSN message from a template. Template must be '\n' separated."
heloname = q.h
sender = q.s
connectip = q.i
receiver = q.r
sender_domain = q.o
rcpt = '\n\t'.join(rcptlist)
try: subject = origmsg['Subject']
except: subject = '(none)'
try:
spf_result = origmsg['Received-SPF']
if not spf_result.startswith('softfail'):
spf_result = None
except: spf_result = None
msg = Message()
msg.add_header('To',sender)
msg.add_header('From','postmaster@%s'%receiver)
msg.add_header('Auto-Submitted','auto-generated (configuration error)')
msg.set_type('text/plain')
if not template:
if spf_result: template = softfail_msg
else: template = nospf_msg
hdrs,body = template.split('\n',1)
for ln in hdrs.splitlines():
name,val = ln.split(':',1)
msg.add_header(name,(val % locals()).strip())
msg.set_payload(body % locals())
return msg
if __name__ == '__main__':
q = spf.query('192.168.9.50',
'SRS0=pmeHL=RH=bmsi.com=stuart@bmsi.com',
'bmsred.bmsi.com',receiver='mail.bmsi.com')
msg = create_msg(q,['charlie@jsconnor.com'],None,None)
print msg.as_string()
# print send_dsn(f,msg.as_string())
print send_dsn(q.s,'mail.bmsi.com',msg.as_string())
+93
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@@ -0,0 +1,93 @@
# Author: Stuart D. Gathman <stuart@bmsi.com>
# Copyright 2005 Business Management Systems, Inc.
# This code is under the GNU General Public License. See COPYING for details.
# Heuristically determine whether a domain name is for a dynamic IP.
# examples we don't yet recognize:
#
# wiley-268-8196.roadrunner.nf.net at ('205.251.174.46', 4810)
# cbl-sd-02-79.aster.com.do at ('200.88.62.79', 4153)
import re
ip3 = re.compile('[0-9]{1,3}')
hpats = (
'h[0-9a-f]{12}[.]',
'h\d*n\d*c\d*o\d*\.',
'pcp\d{6,10}pcs[.]',
'no-reverse',
'S[0-9a-f]{16}[.][a-z]{2}[.]',
'user<3>\.',
'[Cc]ust<3>\.',
'^<3>\.',
'ppp[^.]*<3>\.',
'-ppp\d*\.',
'\d*-<3>\.',
'[0-9a-f]{1,3}-<3>\.',
'p<3>\.pool',
'h<3>\.',
'xdsl-\d*\.',
'-\d*-\d*\.',
'\.adsl\.',
'\.cable\.'
)
rehmac = re.compile('|'.join(hpats))
def is_dynip(host,addr):
"""Return True if hostname is for a dynamic ip.
Examples:
>>> is_dynip('post3.fabulousdealz.com','69.60.99.112')
False
>>> is_dynip('adsl-69-208-201-177.dsl.emhril.ameritech.net','69.208.201.177')
True
>>> is_dynip('[1.2.3.4]','1.2.3.4')
True
"""
if host.startswith('[') and host.endswith(']'):
return True
if addr:
if host.find(addr) >= 0: return True
a = addr.split('.')
ia = map(int,a)
h = host
m = ip3.findall(host)
if m:
g = map(int,m)
ia3 = (ia[1:],ia[:3])
if g[-3:] in ia3: return True
if g[0] == ia[3] and g[1:3] == ia[:2]: return True
if g[-2:] == ia[2:]: return True
g.reverse()
if g[:3] in ia3: return True
if g[:2] == ia[2:]: return True
if ia[2:] in (g[:2],g[-2:]): return True
for m in ip3.finditer(host):
if int(m.group()) == ia[3]:
h = host[:m.start()] + '<3>' + host[m.end():]
break
if rehmac.search(h): return True
if host.find(''.join(a[:3])) >= 0: return True
if host.find(''.join(a[1:])) >= 0: return True
x = "%02x%02x%02x%02x" % tuple(ia)
if host.lower().find(x) >= 0: return True
return False
if __name__ == '__main__':
import fileinput
import sets
seen = sets.Set()
for ln in fileinput.input():
a = ln.split()
if a[3:5] == ['connect','from']:
host = a[5]
if host.startswith('[') and host.endswith(']'):
continue # no PTR
ip = a[7][2:-2]
if ip in seen: continue
seen.add(ip)
if is_dynip(host,ip):
print '%s\t%s DYN' % (ip,host)
else:
print '%s\t%s' % (ip,host)
+38
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@@ -1,5 +1,43 @@
Here is a history of user visible changes to Python milter. Here is a history of user visible changes to Python milter.
0.8.2 Strict processing limits per SPF RFC
Fixed several parsing bugs under RFC
Support official IANA SPF record (type99)
Honeypot support (requires pydspam-1.1.9)
Extended SPF processing results beyond strict RFC limits
Support original SES for bounce protection (requires pysrs-0.30.10)
Callback exception processing option in milter module
Handle corrupt ZIP attachments
0.8.1 Fix zip in zip loop in mime.py
Fix HeaderParseError in bms.py header callback
Check internal_domains for outgoing mail
Fix inconsistent results from send_dsn
0.8.0 Move Milter module to subpackage.
DSN support for Three strikes rule and SPF SOFTFAIL
Move /*mime*/ and dynip to Milter subpackage
Fix SPF unknown mechanism list not cleared
Make banned extensions configurable.
Option to scan zipfiles for bad extensions.
Properly log pydspam exceptions
0.7.3 Experimental release with python2.4 support
0.7.2 Return unknown for invalid ip address in mechanism
Recognize dynamic PTR names, and don't count them as authentication.
Three strikes and yer out rule.
Block softfail by default when no PTR or HELO
Return unknown for null mechanism
Try best guess on HELO also
Expand setreply for common errors
make rhsbl.m4 hack available for sendmail.mc
0.7.1 Handle modifying mislabeled multipart messages without an exception
Support setbacklog, setmlreply
Allow multi-recipient CBV
Return TEMPFAIL for SPF softfail
0.7.0 SPF check hello name
Move pythonsock to /var/run/milter
Move milter.cfg to /etc/mail/pymilter.cfg
Check M$ style XML CID records by converting to SPF
Recognize, but never match ip6 - until we properly support it.
Option to reject when no PTR and no SPF
0.6.9 Reject invalid SRS immediately for benefit of callback verifiers 0.6.9 Reject invalid SRS immediately for benefit of callback verifiers
Fix include bug in spf.py Fix include bug in spf.py
Fix check_header bug Fix check_header bug
-11
View File
@@ -92,7 +92,6 @@ milter. This milter's socket is a unix-domain socket in the filesystem.
See libmilter/README for the definitive list of options. See libmilter/README for the definitive list of options.
NB: The name is specified in two places: here, in sendmail's cf file, and NB: The name is specified in two places: here, in sendmail's cf file, and
in the milter itself. Make sure the two match. in the milter itself. Make sure the two match.
NB: OpenBSD must use an inet socket. See the web page for details.
NB: The above lines can be added in your .mc file with this line: NB: The above lines can be added in your .mc file with this line:
INPUT_MAIL_FILTER(`pythonfilter', `S=local:/home/username/pythonsock') INPUT_MAIL_FILTER(`pythonfilter', `S=local:/home/username/pythonsock')
@@ -124,16 +123,6 @@ and headers at
http://www.bmsi.com/linux/sendmail-rh72.spec http://www.bmsi.com/linux/sendmail-rh72.spec
OpenBSD Notes
-------------
Sendmail is broken on OpenBSD for unix domain sockets. You must use an
inet socket for milter. The sendmail.cf 'X' config line would look like:
Xpythonfilter, S=inet:1234@localhost
and the sample milter needs to be modified accordingly.
IPv6 Notes IPv6 Notes
---------- ----------
+33 -2
View File
@@ -1,10 +1,40 @@
Defer TEMPERROR in SPF evaluation - give precedence to security
(only defer for PASS mechanisms).
Option to add Received-SPF header, but never reject on SPF.
Create null config that does nothing - except maybe add Received-SPF
headers. Many admins would like to turn features on one at a time.
Checking in mime.py;
/bms/cvs/milter/mime.py,v <-- mime.py
new revision: 1.56; previous revision: 1.55
done
Checking in spf.py;
/bms/cvs/milter/spf.py,v <-- spf.py
new revision: 1.18; previous revision: 1.17
done
Checking in testmime.py;
/bms/cvs/milter/testmime.py,v <-- testmime.py
new revision: 1.19; previous revision: 1.18
Auto whitelist based on outgoing email - perhaps with magic subject
or recipient prefix.
Can't output messages with malformed rfc822 attachments.
Example malformed SPF:
onvunvuvvx.usafisnews.org text "v=spf1 mx ptr ip4:207.44.199.970 -all"
Move milter,Milter,mime,spf modules to pymilter
milter package will have bms.py application
Support SMTP AUTH and disable SPF checks when connection is authorized.
Web admin interface Web admin interface
RHBL
Check valid domains allowed by internal senders to detect PCs infected Check valid domains allowed by internal senders to detect PCs infected
with spam trojans. with spam trojans.
Do CBV (callback verification) for mail with no published SPF record. Do CBV (callback verification) for mail with no published SPF record.
message log for automated stats and blacklisting message log for automated stats and blacklisting
adapt init script to work on RH9
Skip dspam when SPF pass? Skip dspam when SPF pass?
Report 551 with rcpt on SPF fail? Report 551 with rcpt on SPF fail?
check spam keywords with character classes, e.g. check spam keywords with character classes, e.g.
@@ -48,3 +78,4 @@ Wrap smfi_setbacklog(int) - but it is only available in sendmail >= 8.12.3,
Need a test module to feed sample messages to a milter though a live Need a test module to feed sample messages to a milter though a live
sendmail and SMTP. The mockup currently used is probably not very accurate, sendmail and SMTP. The mockup currently used is probably not very accurate,
and doesn't test the threading code. and doesn't test the threading code.
+510 -202
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File diff suppressed because it is too large Load Diff
+153
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@@ -0,0 +1,153 @@
#!/usr/bin/python2.3
# Convert a MS Caller-ID entry (XML) to a SPF entry
#
# (c) 2004 by Ernesto Baschny
# (c) 2004 Python version by Stuart Gathman
#
# Date: 2004-02-25
# Version: 1.0
#
# Usage:
# ./cid2spf.pl "<ep xmlns='http://ms.net/1'>...</ep>"
#
# Note that the 'include' directives will also have to be checked and
# "translated". Future versions of this script might be able to get a
# domain name as an argument and "crawl" the DNS for the necessary
# information.
#
# A complete reverse translation (SPF -> CID) might be impossible, since
# there are no way to handle:
# - PTR and EXISTS mechanism
# - MX mechanism with an different domain as argument
# - macros
#
# References:
# http://www.microsoft.com/mscorp/twc/privacy/spam_callerid.mspx
# http://spf.pobox.com/
#
# Known bugs:
# - Currently it won't handle the exclusions provided in the A and R
# tags (prefix '!'). They will show up "as-is" in the SPF record
# - I really haven't read the MS-CID specs in-depth, so there are probably
# other bugs too :)
#
# Ernesto Baschny <ernst@baschny.de>
#
import xml.sax
import spf
# -------------------------------------------------------------------------
class CIDParser(xml.sax.ContentHandler):
"Convert a MS Caller-ID entry (XML) to a SPF entry"
def __init__(self,q=None):
self.spf = []
self.action = '-all'
self.has_servers = None
self.spf_entry = None
if q:
self.spf_query = q
else:
self.spf_query = spf.query(i='127.0.0.1', s='localhost', h='unknown')
def startElement(self,tag,attr):
if tag == 'm':
if self.has_servers != None and not self.has_servers:
raise ValueError(
"Declared <noMailServers\> and later <m>, this CID entry is not valid."
)
self.has_servers = True
elif tag == 'noMailServers':
if self.has_servers:
raise ValueError(
"Declared <m> and later <noMailServers\>, this CID entry is not valid."
)
self.has_servers = False
elif tag == 'ep':
if attr.has_key('testing') and attr.getValue('testing') == 'true':
# A CID with 'testing' found:
# From the MS-specs:
# "Documents in which such attribute is present with a true
# value SHOULD be entirely ignored (one should act as if the
# document were absent)"
# From the SPF-specs:
# "Neutral (?): The SPF client MUST proceed as if a domain did
# not publish SPF data."
# So we set SPF action to "neutral":
self.action = '?all'
elif tag == 'mx':
# The empty MX-tag, same as SPF's MX-mechanism
self.spf.append('mx')
self.tag = tag
def characters(self,text):
tag = self.tag
# Remove starting and trailing spaces from text:
text = text.strip()
if tag == 'a' or tag == 'r':
# The A and R tags from MS-CID are both handled by the
# ipv4/6-mechanisms from SPF:
if text.find(':') < 0:
mechanism = 'ip4'
else:
mechanism = 'ip6'
self.spf.append(mechanism + ':' + text)
elif tag == 'indirect':
# MS-CID's indirect is "sort of" the include from SPF:
# Not really true, because the <indirect> tag from MS-CID also
# provides a fallback in case the included domain doesn't provide
# _ep-records: The inbound MX-servers of the included domains
# are added to the list of allowed outgoing mailservers for the
# domain that declared the _ep-record with the <indirect> tag.
# In SPF you would use the 'mx:domain' to handle this, but this
# wouldn't depend on referred domain having or not SPF-records.
cid_xml = self.cid_txt(text)
if cid_xml:
p = CIDParser()
xml.sax.parseString(cid_xml,p)
if p.has_servers != False:
self.spf += p.spf
else:
self.spf.append('mx:' + text)
def cid_txt(self,domain):
q = self.spf_query
domain='_ep.' + domain
a = q.dns_txt(domain)
if not a: return None
if a[0].lower().startswith('<ep ') and a[-1].lower().endswith('</ep>'):
return ''.join(a)
return None
def endElement(self,tag):
if tag == 'ep':
# This is the end... assemble what we've got
spf_entry = ['v=spf1']
if self.has_servers != False:
spf_entry += self.spf
spf_entry.append(self.action)
self.spf_entry = ' '.join(spf_entry)
def spf_txt(self,cid_xml):
if not cid_xml.startswith('<'):
cid_xml = self.cid_txt(cid_xml)
if not cid_xml: return None
# Parse the beast. Any XML-problem will be reported by xlm.sax
self.spf_entry = None
xml.sax.parseString(cid_xml,self)
return self.spf_entry
if __name__ == '__main__':
import sys
if len(sys.argv) < 2:
print >>sys.stderr, \
"""Usage: %s "<ep xmlns='http://ms.net/1'>...</ep>" """ % sys.argv[0]
sys.exit(1)
cid_xml = sys.argv[1]
p = CIDParser()
print p.spf_txt(cid_xml)
+61 -2
View File
@@ -72,6 +72,9 @@ milter-0.4.5 or later to remove this dependency.
<code>set_flags()</code> before calling <code>runmilter()</code>. For <code>set_flags()</code> before calling <code>runmilter()</code>. For
instance, <code>Milter.set_flags(Milter.ADDRCPT)</code>. You must add together instance, <code>Milter.set_flags(Milter.ADDRCPT)</code>. You must add together
all of <code>ADDHDRS, CHGBODY, ADDRCPT, DELRCPT, CHGHDRS</code> that apply. all of <code>ADDHDRS, CHGBODY, ADDRCPT, DELRCPT, CHGHDRS</code> that apply.
<p> NOTE - recent versions default flags to enabling all features. You
must now call <code>set_flags()</code> if you wish to disable features for
efficiency.
<p> <p>
<li> Q. Why does sendmail sometimes print something like: <li> Q. Why does sendmail sometimes print something like:
@@ -94,14 +97,19 @@ for your specific needs. We will of course continue to move generic
code out of the sample as the project evolves. Think of sample.py as code out of the sample as the project evolves. Think of sample.py as
an active config file. an active config file.
<p> <p>
If you are running bms.py, then the block_chinese option in
<code>/etc/mail/pymilter.cfg</code> controls this feature.
<p>
<li> Q. Why does sendmail coredump with milters on OpenBSD? <li> Q. Why does sendmail coredump with milters on OpenBSD?
<p> A. Sendmail has a problem with unix sockets on OpenBSD. Use <p> A. Sendmail has a problem with unix sockets on old versions of OpenBSD.
an internet domain socket instead. For example, in <code>sendmail.cf</code> use Use an internet domain socket instead. For example, in
<code>sendmail.cf</code> use
<pre> <pre>
Xpythonfilter, S=inet:1234@localhost Xpythonfilter, S=inet:1234@localhost
</pre> </pre>
and change sample.py accordingly. and change sample.py accordingly.
<p> OpenBSD users report that this problem has been fixed.
<p> <p>
<li> Q. How can I change the bounce message for an invalid recipient? <li> Q. How can I change the bounce message for an invalid recipient?
@@ -133,6 +141,57 @@ is a milter declaration for sendmail.cf with all timeouts specified:
<pre> <pre>
Xpythonfilter, S=local:/var/log/milter/pythonsock, F=T, T=C:5m;S:20s;R:60s;E:5m Xpythonfilter, S=local:/var/log/milter/pythonsock, F=T, T=C:5m;S:20s;R:60s;E:5m
</pre> </pre>
<li> Q. There is a Python traceback in the log file! What happened to
my email?
<p> A. When the milter fails with an untrapped exception, a TEMPFAIL
result (451) is returned to the sender. The sender will then retry every
hour or so for several days. Hopefully, someone will notice the
traceback, and workaround or fix the problem.
<li> Q. I read some notes such as "Check valid domains allowed by internal
senders to detect PCs infected with spam trojans." but could not
understand the idea. Could you clarify the content ?
<p> A. The <code>internal_domains</code> configuration specifies which
MAIL FROM domains are used by internal connections. If an internal
PC tries to use some other domain, it is assumed to be a "Zombie".
<p>
Here is a sample log line:
<pre>
2005Jun22 12:01:04 [12430] REJECT: zombie PC at 192.168.100.171 sending MAIL FROM debby@fedex.com
</pre>
No, fedex.com does not use pymilter, and there is no one named debby at my
client. But the idiot using the PC at 192.168.100.171 has downloaded and
installed some stupid weatherbar/hotbar/aquariumscreensaver that is actually a
spam bot.
<p>
The <code>internal_domains</code> option is simplistic, it assumes all
valid senders of the domains are internal. SPF provides a much more general
check of IP and MAIL FROM for external email. Pymilter should soon
have a local policy feature for more general checking of internal mail.
<h3> Using SPF </h3>
<a name="spf">
<li> Q. So how do I use the SPF support? The sample.py milter doesn't seem
to use it.
<p> A. The bms.py milter supports spf. The RedHat RPMs will set almost
everything up for you. For other systems:
<ol type=i>
<li> Arrange to run bms.py in the background (as a service perhaps) and
redirect output and errors to a logfile. For instance, on AIX you'll want
to use SRC (System Resource Controller).
<li> Copy pymilter.cfg to the /etc/mail or the directory you run bms.py in,
and edit it. The comments should explain the options.
<li> Start bms.py in the background as arranged.
<li> Add Xpythonfilter to sendmail.cf or add an INPUT_MAIL_FILTER to
sendmail.mc. Regen sendmail.cf if you use sendmail.mc and restart
sendmail.
<li> Arrange to rotate log files and remove old defang files in
<code>tempdir</code>. The RedHat RPM uses <code>logrotate</code> for
logfiles and a simple cron script using <code>find</code> to clean
<code>tempdir</code>.
</ol>
</ol> </ol>
</html> </html>
+77 -35
View File
@@ -1,63 +1,96 @@
# features intended to filter or block incoming mail
[milter] [milter]
;socket=/var/log/milter/pythonsock # the socket used to communicate with sendmail. Must match sendmail.cf
socket=/var/run/milter/pythonsock
# where to save original copies of defanged and failed messages
tempdir = /var/log/milter/save tempdir = /var/log/milter/save
# how long to wait for a response from sendmail before giving up
;timeout=600 ;timeout=600
scan_rfc822 = 1
# can be CPU intensive
scan_html = 0
# reject asian fonts because we can't read them
block_chinese = 1
# users who hate forwarded mail
;block_forward = egghead@mycorp.com, busybee@mycorp.com
log_headers = 0 log_headers = 0
# Reject mail for domains mentioned unless user is mentioned here also
;check_user = joe@mycorp.com, mary@mycorp.com, file:bigcorp.com
# porn words are case insensitive
porn_words = penis, breast, pussy, horse cock, porn, xenical, diet pill, d1ck,
vi*gra, vi-a-gra, viag, tits, p0rn, hunza, horny, sexy, c0ck,
p-e-n-i-s, hydrocodone, vicodin, xanax, vicod1n, x@nax, diazepam,
v1@gra, xan@x, cialis, ci@lis, frëe, xãnax, valíum, vãlium, via-gra,
x@n3x, vicod3n, penís, v|c0d1n, phentermine, en1arge, dip1oma, v1codin
# spam words are case sensitive
spam_words = $$$, !!!, XXX, FREE, HGH
# connection ips and hostnames are matched against this glob style list # connection ips and hostnames are matched against this glob style list
# to recognize internal senders # to recognize internal senders.
;internal_connect = 192.168.*.* ;internal_connect = 192.168.*.*
# mail that is not an internal_connect and claims to be from an # mail that is not an internal_connect and claims to be from an
# internal domain is rejected. # internal domain is rejected. Furthermore, internal mail that
# does not claim to be from an internal domain is rejected.
# You should enable SPF instead if you can. SPF is much more comprehensive and
# flexible. However, SPF is not currently checked for outgoing
# (internal_connect) mail because it doesn't yet handle authorizing
# internal IPs locally.
;internal_domains = mycorp.com ;internal_domains = mycorp.com
# connections from a trusted relay can trust the first Received header # connections from a trusted relay can trust the first Received header
# SPF checks are bypassed for internal connections and trusted relays.
;trusted_relay = 1.2.3.4, 66.12.34.56 ;trusted_relay = 1.2.3.4, 66.12.34.56
# reject external senders with hello names no legit external sender would use
# Reject external senders with hello names no legit external sender would use.
# SPF will do this also, but listing your own domain and mailserver here
# will save some DNS lookups when rejecting certain viruses.
;hello_blacklist = mycorp.com, 66.12.34.56 ;hello_blacklist = mycorp.com, 66.12.34.56
# Reject mail for domains mentioned unless user is mentioned here also
;check_user = joe@mycorp.com, mary@mycorp.com, file:bigcorp.com
# features intended to filter or block incoming mail
[defang]
# do virus scanning on attached messages also
scan_rfc822 = 1
# do virus scanning on attached zipfiles also
scan_zip = 0
# Comment out scripts in HTML attachments. Can be CPU intensive.
scan_html = 0
# reject messages with asian fonts because we can't read them
block_chinese = 1
# list users who hate forwarded mail
;block_forward = egghead@mycorp.com, busybee@mycorp.com
# reject mail with these case insensitive strings in the subject
porn_words = penis, breast, pussy, horse cock, porn, xenical, diet pill, d1ck,
vi*gra, vi-a-gra, viag, tits, p0rn, hunza, horny, sexy, c0ck, xanaax,
p-e-n-i-s, hydrocodone, vicodin, xanax, vicod1n, x@nax, diazepam,
v1@gra, xan@x, cialis, ci@lis, frëe, xãnax, valíum, vãlium, via-gra,
x@n3x, vicod3n, penís, c0d1n, phentermine, en1arge, dip1oma, v1codin,
valium, rolex, sexual, fuck, adv1t
# reject mail with these case sensitive strings in the subject
spam_words = $$$, !!!, XXX, FREE, HGH
# attachments with these extensions will be replaced with a warning
# message. A copy of the original will be saved.
banned_exts = ade,adp,asd,asx,asp,bas,bat,chm,cmd,com,cpl,crt,dll,exe,hlp,hta,
inf,ins,isp,js,jse,lnk,mdb,mde,msc,msi,msp,mst,ocx,pcd,pif,reg,scr,sct,
shs,url,vb,vbe,vbs,wsc,wsf,wsh
# See http://bmsi.com/python/pysrs.html for details
[srs] [srs]
config=/etc/mail/pysrs.cfg config=/etc/mail/pysrs.cfg
# SRS options can be set here also, but must match the sendmail plugin
;secret="shhhh!" ;secret="shhhh!"
;maxage=21 ;maxage=21
;hashlength=4 ;hashlength=4
;database=/var/log/milter/srsdata ;database=/var/log/milter/srsdata
;fwdomain = mydomain.com ;fwdomain = mydomain.com
# turn this on after a grace period # turn this on after a grace period to reject spoofed DSNs
reject_spoofed = 0 reject_spoofed = 0
# See http://spf.pobox.com for more info on SPF.
[spf] [spf]
# namespace where SPF records can be supplied for domains without one # namespace where SPF records can be supplied for domains without one
# records are search for under _spf.domain.com # records are searched for under _spf.domain.com
;delegate = domain.com ;delegate = domain.com
# domains where a neutral SPF result should cause mail to be rejected # domains where a neutral SPF result should cause mail to be rejected
;reject_neutral = aol.com ;reject_neutral = aol.com
# use a default (v=spf1 a/24 mx/24 ptr) when no SPF records are published # use a default (v=spf1 a/24 mx/24 ptr) when no SPF records are published
;best_guess = 0 ;best_guess = 0
# Reject senders that have neither PTR nor valid HELO nor SPF records, or send
# DSN otherwise
;reject_noptr = 0
# always accept softfail from these domains, or send DSN otherwise
;accept_softfail = bounces.amazon.com
# features intended to clean up outgoing mail # features intended to clean up outgoing mail
[scrub] [scrub]
# domains that stupidly block visible private nodes # domains that block visible private nodes
;hide_path = jcpenney.com ;hide_path = jcpenney.com
# block, don't just replace with warning, viruses from these domains # reject, don't just replace with warning, viruses from these domains
;reject_virus_from = mycorp.com ;reject_virus_from = mycorp.com
# features intended for spying on users and coworkers # features intended for spying on users and coworkers
@@ -85,18 +118,24 @@ blind = 1
# additional copies can be added # additional copies can be added
;walter1 = cust@othercorp.com,walter@bigcorp.com,boss@bigcorp.com, ;walter1 = cust@othercorp.com,walter@bigcorp.com,boss@bigcorp.com,
; walter@bigcorp.com ; walter@bigcorp.com
;bulk = soruce@telex.com,bob@jsconnor.com
;bulk = soruce@telex.com,larry@jsconnor.com
# See http://bmsi.com/python/dspam.html
[dspam] [dspam]
# Select a well moderated dspam dictionary to reject spammy headers # Select a well moderated dspam dictionary to reject spammy headers.
# dspam-python must be installed to use: http://bmsi.com/python/dspam.html # To filter on the entire message, use the full setup below.
# only EXTERNAL messages are dspam filtered # only EXTERNAL messages are dspam filtered
;dspam_dict=/var/lib/dspam/moderator.dict ;dspam_dict=/var/lib/dspam/moderator.dict
# Opt-opt recipients from dspam screening and header triage # Opt-opt recipients from dspam screening and header triage
;dspam_exempt=getitall@mycorp.com ;dspam_exempt=getitall@mycorp.com
# Do not scan mail (ostensibly) from these senders # Do not scan mail (ostensibly) from these senders
;dspam_whitelist=getitall@sender.com ;dspam_whitelist=getitall@sender.com
# Reject spam to these domains, perhaps because we are a backup MX server # Reject spam to these domains instead of quarantining it.
;dspam_reject=othercorp.com ;dspam_reject=othercorp.com
# Scan internal mail - often a good source of stats on legit mail.
;dspam_internal=1
# directory for dspam user quarantine, signature db, and dictionaries # directory for dspam user quarantine, signature db, and dictionaries
# defining this activates the dspam application # defining this activates the dspam application
@@ -113,8 +152,11 @@ blind = 1
;spam=spam@foocorp.com ;spam=spam@foocorp.com
# address to forward false positives to. milter will process and not deliver # address to forward false positives to. milter will process and not deliver
;falsepositive=ham@foocorp.com ;falsepositive=ham@foocorp.com
# the dspam_screener is used to screen mail for all recipients who are # account which receives only spam: all received messages are marked as spam.
# not dspam_users. Spam goes to the screeners quarantine, and the original ;honeypot=spam-me@example.com
# recipients saved so that false positives can be properly delivered. # the dspam_screener is a list of dspam users who screen mail for all
# recipients who are not dspam_users. Spam goes to the screeners quarantine,
# and the original recipients are saved so that false positives can be properly
# delivered.
;dspam_screener=david,goliath
# The dspam CGI can also be used: logins must match dspam users # The dspam CGI can also be used: logins must match dspam users
+123 -270
View File
@@ -13,8 +13,8 @@ ALT="Viewable With Any Browser" BORDER="0"></A>
usemap="#banner_4" alt="Your vote?"> usemap="#banner_4" alt="Your vote?">
<map name="banner_4"> <map name="banner_4">
<area shape="rect" coords="330,25,426,59" <area shape="rect" coords="330,25,426,59"
href="http://www.sepschool.org/survey/" alt="I Disagree"> href="http://education-survey.org/" alt="I Disagree">
<area shape="rect" coords="234,28,304,57" href="http://sepschool.org/" alt="I Agree"> <area shape="rect" coords="234,28,304,57" href="http://www.honestEd.com/" alt="I Agree">
</map> </map>
</P> </P>
@@ -24,12 +24,16 @@ ALT="Viewable With Any Browser" BORDER="0"></A>
Stuart D. Gathman</a><br> Stuart D. Gathman</a><br>
This web page is written by Stuart D. Gathman<br>and<br>sponsored by This web page is written by Stuart D. Gathman<br>and<br>sponsored by
<a href="http://www.bmsi.com">Business Management Systems, Inc.</a> <br> <a href="http://www.bmsi.com">Business Management Systems, Inc.</a> <br>
Last updated Apr 21, 2004</h4> Last updated Jun 09, 2005</h4>
See the <a href="faq.html">FAQ</a> | <a href="#download">Download now</a> | See the <a href="faq.html">FAQ</a> | <a href="http://sourceforge.net/project/showfiles.php?group_id=139894">Download now</a> |
<a href="/mailman/listinfo/pymilter">Subscribe to mailing list</a> <a href="/mailman/listinfo/pymilter">Subscribe to mailing list</a> |
<a href="#overview">Overview</a> |
<a href="/python/dspam.html">pydspam</a> |
<a href="/libdspam/dspam.html">libdspam</a>
<p> <p>
<img src="python55.gif" align=left alt="A Python"> <a href="//www.python.org">
<img src="python55.gif" align=left alt="A Python"></a>
<a href="//www.sendmail.org/">Sendmail</a> introduced a <a href="//www.sendmail.org/">Sendmail</a> introduced a
<a href="http://www.milter.org/milter_api/api.html"> new API</a> beginning with version 8.10 - <a href="http://www.milter.org/milter_api/api.html"> new API</a> beginning with version 8.10 -
libmilter. The milter module for <a href="//www.python.org">Python</a> libmilter. The milter module for <a href="//www.python.org">Python</a>
@@ -37,30 +41,107 @@ provides a python interface to libmilter that exploits all its features.
<p> <p>
Sendmail 8.12 officially releases libmilter. Sendmail 8.12 officially releases libmilter.
Version 8.12 seems to be more robust, and includes new privilege Version 8.12 seems to be more robust, and includes new privilege
separation features to enhance security. separation features to enhance security. Even better, sendmail 8.13
I recommend upgrading. supports socket maps, which makes <a href="pysrs.html">pysrs</a> much more
efficient and secure. I recommend upgrading.
<h2> <a name=dspam>Bayesian Filtering</a> </h2> <h2> Recent Changes </h2>
I have selected the <a href="http://www.nuclearelephant.com/projects/dspam/"> Python milter is being moved to
dspam bayes filter project</a> and <a href="dspam.html"> <a href="http://sourceforge.net/projects/pymilter/">pymilter Sourceforge
packaged it for python</a>. project</a> for development.
Release 0.6.6 adds support for <a href="http://spf.pobox.com/">SPF</a>, <p>
Release 0.8.0 is the first <a href="http://sourceforge.net/">Sourceforge</a>
release. It supports Python-2.4, and provides an option to accept mail
that gets an SPF softfail or fails the 3 strikes rule, provided the
alleged sender accepts a DSN explaining the problem. Python-2.3 is
no longer supported by the reworked mime.py module, although API changes
could be backported. There are too many incompatible changes to the
python email package.
<p>
Release 0.7.2 tightens the authentication screws with a "3 strikes and
you're out" policy. A sender must have a valid PTR, HELO, or SPF record
to send email. Specific senders can be whitelisted using the
"delegate" option in the spf configuration section by adding a
default SPF record for them. The PTR and HELO are required
by RFC anyway, so this is not an unreasonable requirement.
There is now a coherent policy for an SPF softfail result. A softfail
is accepted if there is a valid PTR or HELO, or if the domain
is listed in the "accept_softfail" option of the spf configuration section.
A neutral result is accepted by default if there is a valid PTR or
HELO, (and the SPF record was not guessed), unless the domain is listed in the
"reject_neutral" option. Common forms of PTR records for dynamic IPs are
recognized, and do not count as a valid PTR. This does not prevent anyone
from sending mail from a dynamic IP - they just need to configure a
valid HELO name or publish an SPF record.
<p>
As SPF adoption continues to rise, forged spam is not getting through. So
spammers are publishing their SPF records as predicted. The 0.7.2 RPM
now provides the <code>rhsbl</code> sendmail hack so that spammer domains
can be blacklisted. With the RPM installed, add a line like the following
to your <code>sendmail.mc</code>.
<pre>
HACK(rhsbl,`blackholes.example.com',"550 Rejected: " $&{RHS} " has been spamming our customers.")dnl
</pre>
<p>
Of course, spammers are now starting to register
throwaway domains. The next thing we need is a custom DNS server,
in Python, that
can recognize patterns. For instance, one spammer registers ded304.com,
ded305.com, ded306.com, etc. We also need the custom DNS server to
let SPF classic clients check SES (which will be part of pysrs).
The <a href="http://twistedmatrix.com/products/twisted">Twisted Python</a>
framework provides a custom DNS server - but I
would like a smaller implementation for our use.
<p>
The RPM for release 0.7.0 moves the config file and socket locations to
/etc/mail and /var/run/milter respectively. We now parse Microsoft CID records
- but only hotmail.com uses them. They seem to have applied for a patent on
the brilliant idea of examining the mail headers to see who the message is
from. We aren't doing that here, so not to worry - but I am not a lawyer, so
if you are worried, change spf.py around line 626 to return None instead of
calling CIDParser(). There is a new option to reject mail with no PTR
and no SPF.
<p>
Microsoft is pushing an anti-opensource license for their pending patent
along with their sender-ID proposal before the IETF.
It is royalty free - but requires anyone distributing a binary they've
compiled from source to sign a license agreement. The Apache Software
Foundation <a
href="http://www.apache.org/foundation/docs/sender-id-position.html"> explains
the problem with sender-ID</a>, and Debian <a
href="http://www.debian.org/News/2004/20040904">concurs</a>. Since
the <a href="http://download.microsoft.com/download/4/3/9/439b024b-09fd-44ee-8ff0-10e834004c36/senderid_FAQ.PDF">Microsoft license</a> is
<a href="http://www.circleid.com/article/732_0_1_0_C/">incompatible with free
software in general</a> and the <a
href="http://www.imc.org/ietf-mxcomp/mail-archive/msg03678.html">GPL in
particular</a>, Python milter will not be able to implement sender-ID in its
current form. This was, no doubt, Microsoft's intent all along.
<p>
Sender-ID attempts to do for RFC2822 headers what SPF does for RFC2821 headers.
Unlike SPF, it has never been tried, and is encumbered by a stupid patent. I
recommend ignoring it and continuing to implement and improve SPF until a
working and unencumbered proposal for RFC2822 headers surfaces.
<p>
<a href="http://openspf.com">
<img src="SPF.gif" align=left alt="SPF logo"></a>
Release 0.6.6 adds support for <a href="http://openspf.com/">SPF</a>,
a protocol to prevent forging of the envelope from address. a protocol to prevent forging of the envelope from address.
SPF support requires <a href="http://pydns.sourceforge.net/">pydns</a>. SPF support requires <a href="http://pydns.sourceforge.net/">pydns</a>.
The included spf.py module is an updated version of the original 1.6 The included spf.py module is an updated version of the original 1.6
version at <a href="http://www.wayforward.net/spf/">wayforward.net</a>. version at <a href="http://www.wayforward.net/spf/">wayforward.net</a>.
The updated version tracks the draft RFC and test suite. The updated version tracks the draft RFC and test suite.
<p> <p>
Release 0.6.0 offers a simple application of dspam I call "header triage", The FAQ addresses <a href="faq.html#spf">how to get started with SPF</a>.
which rejects messages with spammy headers. Since sendmail has to
read the entire message anyway once we start reading headers, it
would probably be better to scan the whole message - except that
we replace dangerous attachments elsewhere in the milter - which screws up the
body statistics for messages with dangerous attachments.
<p> <p>
Release 0.6.1 adds a full milter based dspam application. Release 0.6.1 adds a full milter based dspam application.
<p> <p>
I have selected the <a href="http://www.nuclearelephant.com/projects/dspam/">
dspam bayes filter project</a> and <a href="dspam.html">
packaged it for python</a>.
Release 0.6.0 offers a simple application of dspam I call "header triage",
which rejects messages with spammy headers.
To use header triage, you must have <a href="dspam.html">DSPAM</a> installed, To use header triage, you must have <a href="dspam.html">DSPAM</a> installed,
and select a dictionary that is well moderated by someone who gets and select a dictionary that is well moderated by someone who gets
lots of spam. That dictionary can be used to block spam that is lots of spam. That dictionary can be used to block spam that is
@@ -109,7 +190,7 @@ entries. Be sure to handle both Bcc and file copies, and designating what
mail should be copied. How should "outgoing" be defined? Implementing it is mail should be copied. How should "outgoing" be defined? Implementing it is
easy once the configuration is designed. easy once the configuration is designed.
<h3>Overview</h3> <h3><a name=overview>Overview</a></h3>
This package provides a robust toolkit for Python <a This package provides a robust toolkit for Python <a
href="#milter">milters</a>, and the beginnings of a general purpose mail href="#milter">milters</a>, and the beginnings of a general purpose mail
@@ -141,244 +222,24 @@ methods that
do nothing, and also provides wrappers for the libmilter methods to mutate do nothing, and also provides wrappers for the libmilter methods to mutate
the message. the message.
<p> <p>
The 'spf' module provides an implementation of <a href="http://openspf.com">
SPF</a> useful for detecting email forgery.
<p>
The 'mime' module provides a wrapper for the Python email package that
fixes some bugs, and simplifies modifying selected parts of a MIME message.
<p>
Finally, the bms.py application is both a sample of how to use the Finally, the bms.py application is both a sample of how to use the
Milter module, and the beginnings of a general purpose SPAM filtering, Milter and spf modules, and the beginnings of a general purpose SPAM filtering,
wiretapping, and Win32 virus protection milter. wiretapping, SPF checking, and Win32 virus protecting milter. It can
make use of the <a href="pysrs.html">pysrs</a> package when available for
<h3><a name=download>Downloading</a></h3> SRS/SES checking and the <a href="dspam.html">pydspam</a> package for Bayesian
content filtering. SPF checking
The latest stable release is <a href="#stable">0.6.9</a>. A stable requires <a href="http://pydns.sourceforge.net/">
release is one which has been installed (and working correctly) on pydns</a>. Configuration documentation is currently included as comments
production systems long enough to convince me that it is stable. As in the <a href="milter.cfg">sample config file</a> for the bms.py milter.
the package gains more features and complexity, stable will mean no
bug reports from outside users either.
<p>
The latest version is 0.6.9-1. See the <a href=NEWS>Change Log</a>.
<p>
<a name="stable"><b>Stable</b></a>
<a href="http://bmsi.com/python/milter-0.6.9.tar.gz">
milter-0.6.9.tar.gz</a> Add SPF test suite driver, and validate
spf.py against test suite. Add best_guess and get_header to spf.py.
Libmilter timeout option in config.
<br>
<a href="http://bmsi.com/linux/rh72/milter-0.6.9-1.i386.rpm">
milter-0.6.9-1.i386.rpm</a> Binary RPM for Redhat 7.x, now requires
sendmail-8.12 and <a href="http://www.python.org/2.3.3/rpms.html">
python2.3</a>.
<br>
<a href="http://bmsi.com/linux/rh9/milter-0.6.9-1.src.rpm">
milter-0.6.9-1.src.rpm</a> Source RPM for Redhat 9,7.x.
<p>
<a href="http://bmsi.com/python/milter-0.6.8.tar.gz">
milter-0.6.8.tar.gz</a> Include Received-SPF headers in Dspam analysis.
Fix sysv init for Redhat 9 and later. Reject bounces with multiple
recipients.
<br>
<a href="http://bmsi.com/python/milter-0.6.8.patch">milter-0.6.8.patch</a>
Last minutes fixes from production testing.
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.8-3.i386.rpm">
milter-0.6.8-3.i386.rpm</a> Binary RPM for Redhat 7.x, now requires
sendmail-8.12 and <a href="http://www.python.org/2.3.3/rpms.html">
python2.3</a>.
<br>
<a href="http://bmsi.com/linux/rh9/milter-0.6.8-3.src.rpm">
milter-0.6.8-3.src.rpm</a> Source RPM for Redhat 9,7.x.
<p>
<a href="http://bmsi.com/python/milter-0.6.7.tar.gz">
milter-0.6.7.tar.gz</a> Explicit local socket bug,
<a href="http://spf.pobox.com/srs.html">SRS</a> forgery detection,
thread resource starvation detection.
SRS support requires <a href="http://bmsi.com/python/pysrs.html">pysrs</a>.
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.7-3.i386.rpm">
milter-0.6.7-3.i386.rpm</a> Binary RPM for Redhat 7.x, now requires
sendmail-8.12 and <a href="http://www.python.org/2.3.3/rpms.html">
python2.3</a>.
<br>
<a href="http://bmsi.com/linux/rh72/milter-0.6.7-3.src.rpm">
milter-0.6.7-3.src.rpm</a> Source RPM for Redhat 7.x.
Release 0.6.7-3 patches:
<ul>
<li> Defang message/rfc822 content_type with boundary
<li> Support SPF delegation
<li> Reject neutral SPF result for selected domains
</ul>
<p>
<a href="http://bmsi.com/python/milter-0.6.6.tar.gz">
milter-0.6.6.tar.gz</a> Plug another memory leak,
<a href="http://spf.pobox.com/">SPF</a> support, hello blacklist.
SPF support requires <a href="http://pydns.sourceforge.net/">pydns</a>.
NOTE - the spf.py module included is modified from the official 1.6
version at <a href="http://www.wayforward.net/spf/">wayforward.net</a>.
I neglected to add the CVS log. The changes are expanded result codes
and tolerating common method misspellings in SPF records. I have notified the
author, but haven't heard back. At some point, the RPM will
include the official pyspf tarball and apply patches.
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.6-2.i386.rpm">
milter-0.6.6-2.i386.rpm</a> Binary RPM for Redhat 7.x, now requires
sendmail-8.12 and <a href="http://www.python.org/2.3.3/rpms.html">
python2.3</a>. Release 2 fixes sysv init script bug for python2.3.
<br>
<a href="http://bmsi.com/linux/rh72/milter-0.6.6-2.src.rpm">
milter-0.6.6-2.src.rpm</a> Source RPM for Redhat 7.x
<p>
<a href="http://bmsi.com/python/milter-0.6.5.tar.gz">
milter-0.6.5.tar.gz</a> Plug memory leak, progress reporting, trusted relay.
Redhat RPM now requires sendmail-8.12.
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.5-2.i386.rpm">
milter-0.6.5-2.i386.rpm</a> Binary RPM for Redhat 7.x
<br>
<a href="http://bmsi.com/linux/rh72/milter-0.6.5-2.src.rpm">
milter-0.6.5-2.src.rpm</a> Source RPM for Redhat 7.x
<p>
<a href="http://bmsi.com/python/milter-0.6.4.tar.gz">
milter-0.6.4.tar.gz</a> Numerous Dspam fixes. Requires
<a href="dspam.html">pydspam-1.1.5</a> and
<a href="/libdspam/dspam.html">dspam-2.6.5.2</a>
for Dspam features. The dspam-python RPM has been replaced by pydspam.
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.4-1.i386.rpm">
milter-0.6.4-1.i386.rpm</a> Binary RPM for Redhat 7.x
<p>
<a href="http://bmsi.com/python/milter-0.6.3.1.tar.gz">
milter-0.6.3.1.tar.gz</a> New dspam SCREENER feature with pydspam-1.1.4.
Don't save a defang copy of false positives. Fixed an oops from last fix,
rejecting false positives. BUG: sendmail-8.11 doesn't invoke milter
when sending mail via sendmail from command line (8.12 works). Therefore,
the supplied falsepositive script for milter based dspam doesn't work
with stock RedHat 7.x. I am writing a HOWTO for configuring milter
based dspam that will address this (and a fix in the next version).
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.3-1.i386.rpm">
milter-0.6.3-1.i386.rpm</a> Binary RPM for Redhat 7.x
<p>
<a href="http://bmsi.com/python/milter-0.6.2.tar.gz">
milter-0.6.2.tar.gz</a> work around email.Message.get_filename bug,
dspam_exempt list, REJECT messages with missing MIME boundaries (which
are almost always spam),
DISCARD messages which any dspam user flags as spam,
start.sh was calling python instead of python2 on Linux.
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.2-1.src.rpm">
milter-0.6.2-1.src.rpm</a> Source RPM for Redhat 7.x (and likely
higher versions)
<p>
<a href="http://bmsi.com/python/milter-0.6.1.tar.gz">
milter-0.6.1.tar.gz</a> dspam milter application, python-2.2.3 support.
<p>
You must have <a href=dspam.html>dspam and dspam-python</a> loaded for
the dspam feature to work. Brief instructions for configuring are
in the default config file. This is working at a customer, but I'm
sure a few more iterations will be required to make setup as smooth
as possible.
<p>
NOTE: Outlook destroys dspam tags when forwarding mail (while converting
HTML to text). Perhaps some config option will turn this abominable
"feature" off. Working around this by making dspam tags visble on
HTML mail is ugly. My suggestion is to not use Outlook, for this and
many other reasons - especially security. Any other suggestions for
those married to Microsoft are welcome. The DSPAM LDA works around this
by making the tags visible in HTML attachments. This is ugly, and
occasionally corrupts attachments.
<p>
We have to supply workarounds for bugs in the email module (reported
to sourceforge). The workarounds reference some internal variables
which change with python versions.
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.1-1.i386.rpm">
milter-0.6.1-1.i386.rpm</a> Binary RPM for Redhat 7.x
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.1-1.src.rpm">
milter-0.6.1-1.src.rpm</a> Source RPM for Redhat 7.x (and likely
higher versions)
<p>
<a href="http://bmsi.com/python/milter-0.6.0.tar.gz">
milter-0.6.0.tar.gz</a> simple dspam pre-filtering, use email module,
requires python &gt;= 2.2.2.
<ul>
<li> The milter.so module from 0.5.4
is needed to run this release on AIX. Haven't tracked this down yet.
<li> The patches to fix the email packages in mime.py don't work
on python-2.2.3. The email package is still broken in 2.3, and patches
required for that will likely be different still.
</ul>
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.0-1.i386.rpm">
milter-0.6.0-1.i386.rpm</a> Binary RPM for Redhat 7.x
<p>
<a href="http://bmsi.com/linux/rh72/milter-0.6.0-1.src.rpm">
milter-0.6.0-1.src.rpm</a> Source RPM for Redhat 7.x (and likely
higher versions)
<p>
<a href="http://www.bmsi.com/python/milter-0.5.5.tar.gz">
milter-0.5.5.tar.gz</a> IPV6 support, passing None to set_XXX_callback,
set_reply, chg_header, detect internal connections. Note, this release
did not work on AIX4.1.5, probably due to IPV6 support breaking something.
The milter.so module from 0.5.4 can be installed to use this release
with AIX.
<p>
<a href="http://www.bmsi.com/python/milter-0.5.4.tar.gz">
milter-0.5.4.tar.gz</a> wiretap, smart alias features, quarantine support.
<p>
The name of the production "sample" milter "bms.py" now
stands for "Basic Milter System" until someone suggests a better name.
The test coverage is rather
sparse at present.
Please <a href="mailto:%73%74%75%61%72%74%40%62%6D%73%69%2E%63%6F%6D">email</a> with proposals for what
to name the milter application.
<h4>NOTES</h4>
<ul>
<li>
Quarantine support requires that you define _FFR_QUARANTINE
when compiling miltermodule.c. I am not sure how to make setup.py
do that for you iff sendmail was actually compiled with _FFR_QUARANTINE.
<li>
While 0.6.0 will use the new email package in Python-2.2, that
package seems to be buggy in Python-2.2.1. The list example in the docs
doesn't find all MIME parts. Update: Python-2.2.2 has fixed the email
package. It can now parse my test cases.
<li>
Preliminary testing with python-2.2 shows that most things work after
adding <code>self.readahead = ""</code> to <code>mimepart.seek</code>.
Python-2.2 <code>multifile</code> reads one less newline per section than
2.1. I'm not not sure which is correct. After adding some calls to
<code>rstrip()</code> in testmime.py, all milter modules pass unit testing
with python-2.2. Python-2.2 patches have been released since 0.5.3.
<li>
sgmlop-1.1a3 has a memory leak (at least Python milter has a
memory leak when using sgmlop instead of sgmllib). Do not make Python
milter use sgmlop-1.1a2 or a3 in a production
system unless you can restart your milter periodically. The amount
of memory leaked seems roughly proportional to the amount of HTML
parsed.
<li>
There are a number of ways that malformed MIME attachments
can cause a python traceback. Uncaught exceptions cause a 415
error to be returned to sendmail. So far, all the malformed messages
I've investigated have been SPAM - so good riddance. I would prefer,
however, that the mime handling libraries were more precise. Beginning
with 0.5.1, bms.py will save messages that cause a traceback during
scanning in the tempfile directory with a ".fail" extension. This
makes it easier to get samples of mail that causes parsing problems
for incorporation into the unit tests.
</ul>
<p>
<a href="http://www.bmsi.com/python/milter-0.5.2.tar.gz">
milter-0.5.2.tar.gz</a> Fix and unittest another HTML parsing bug.<br>
<a href="http://www.bmsi.com/python/milter-0.5.1.tar.gz">
milter-0.5.1.tar.gz</a> Handle encoded rfc822 attachments.<br>
<a href="http://www.bmsi.com/python/milter-0.5.0.tar.gz">
milter-0.5.0.tar.gz</a> Use a config file so users don't have to
keep syncing with bms.py. <br>
<a href="http://www.bmsi.com/python/milter-0.4.5.tar.gz">
milter-0.4.5.tar.gz</a> Work with sgmlop. Reduce local hacks to config variables.
<p> <p>
Python milter is under GPL. The authors can probably be convinced to Python milter is under GPL. The authors can probably be convinced to
change this to LGPL. change this to LGPL if needed.
<h3>What is a <a name="milter">milter</a>?</h3> <h3>What is a <a name="milter">milter</a>?</h3>
@@ -429,7 +290,7 @@ The "defang" function of the sample milter was inspired by
a Perl milter with flexible attachment processing options. The latest a Perl milter with flexible attachment processing options. The latest
version of MIMEDefang uses an apache style process pool to avoid reloading version of MIMEDefang uses an apache style process pool to avoid reloading
the Perl interpreter for each message. This makes it fast enough for the Perl interpreter for each message. This makes it fast enough for
production and does not use Perl threading. production without using Perl threading.
<p> <p>
<a href="http://sourceforge.net/projects/mailchecker">mailchecker</a> is <a href="http://sourceforge.net/projects/mailchecker">mailchecker</a> is
a Python project to provide flexible attachment processing for mail. I a Python project to provide flexible attachment processing for mail. I
@@ -503,18 +364,10 @@ me if you successfully install milter on a system not mentioned below.
<td>0.5.4</td><tr> <td>0.5.4</td><tr>
<td>RedHat 7.1</td><td>gcc-2.96</td><td>?</td><td>8.12.1</td> <td>RedHat 7.1</td><td>gcc-2.96</td><td>?</td><td>8.12.1</td>
<td>0.3.5</td><tr> <td>0.3.5</td><tr>
<td>RedHat 7.2</td><td>gcc-2.96</td><td>2.1.1</td><td>8.11.6</td>
<td>0.4.1</td><tr>
<td>RedHat 7.2</td><td>gcc-2.96</td><td>2.2.1</td><td>8.11.6</td>
<td>0.4.5</td><tr>
<td>RedHat 7.2</td><td>gcc-2.96</td><td>2.2.2</td><td>8.11.6</td>
<td>0.5.5</td><tr>
<td>RedHat 7.2</td><td>gcc-2.96</td><td>2.3.3</td><td>8.12.10</td>
<td>0.6.6</td><tr>
<td>RedHat 7.3</td><td>gcc-2.96</td><td>2.2.2</td><td>8.11.6</td> <td>RedHat 7.3</td><td>gcc-2.96</td><td>2.2.2</td><td>8.11.6</td>
<td>0.5.5</td><tr> <td>0.5.5</td><tr>
<td>RedHat 7.3</td><td>gcc-2.96</td><td>2.3.3</td><td>8.12.10</td> <td>RedHat 7.3</td><td>gcc-2.96</td><td>2.3.3</td><td>8.13.1</td>
<td>0.6.6</td><tr> <td>0.7.2</td><tr>
<td>RedHat 8.0</td><td>gcc-3.2</td><td>2.2.1</td><td>8.12.6</td> <td>RedHat 8.0</td><td>gcc-3.2</td><td>2.2.1</td><td>8.12.6</td>
<td>0.5.2</td><tr> <td>0.5.2</td><tr>
<td>Debian Linux</td><td>gcc-2.95.2</td><td>2.1.1</td><td>8.12.0</td> <td>Debian Linux</td><td>gcc-2.95.2</td><td>2.1.1</td><td>8.12.0</td>
@@ -527,14 +380,14 @@ me if you successfully install milter on a system not mentioned below.
<td>0.3.4</td><tr> <td>0.3.4</td><tr>
<td>AIX-4.1.5</td><td>gcc-2.95.2</td><td>2.1.3</td><td>8.12.3</td> <td>AIX-4.1.5</td><td>gcc-2.95.2</td><td>2.1.3</td><td>8.12.3</td>
<td>0.4.2</td><tr> <td>0.4.2</td><tr>
<td>AIX-4.1.5</td><td>gcc-2.95.2</td><td>2.2.2</td><td>8.12.6</td> <td>AIX-4.1.5</td><td>gcc-2.95.2</td><td>2.2.3</td><td>8.13.1</td>
<td>0.5.4</td><tr> <td>0.7.1</td><tr>
<td>Slackware 7.1</td><td>?</td><td>?</td><td>8.12.1</td> <td>Slackware 7.1</td><td>?</td><td>?</td><td>8.12.1</td>
<td>0.3.8</td><tr> <td>0.3.8</td><tr>
<td>Slackware 9.0</td><td>gcc-3.2.2</td><td>2.2.3</td><td>8.12.9</td> <td>Slackware 9.0</td><td>gcc-3.2.2</td><td>2.2.3</td><td>8.12.9</td>
<td>0.5.4</td><tr> <td>0.5.4</td><tr>
<td>OpenBSD</td><td>?</td><td>2.1.1</td><td>8.11.6</td> <td>OpenBSD</td><td>?</td><td>2.3.3?</td><td>8.13.1?</td>
<td>0.3.9</td><tr> <td>0.7.2</td><tr>
<td>SuSE 7.3</td><td>gcc-2.95.3</td><td>2.1.1</td><td>8.12.2</td> <td>SuSE 7.3</td><td>gcc-2.95.3</td><td>2.1.1</td><td>8.12.2</td>
<td>0.3.9</td><tr> <td>0.3.9</td><tr>
<td>FreeBSD</td><td>gcc-2.95.3</td><td>2.2.1</td><td>8.12.3</td> <td>FreeBSD</td><td>gcc-2.95.3</td><td>2.2.1</td><td>8.12.3</td>
+98 -10
View File
@@ -1,12 +1,27 @@
%define name milter %define name milter
%define version 0.6.9 %define version 0.8.2
%define release 1 %define release 2.RH7
# Redhat 7.x and earlier (multiple ps lines per thread) # what version of RH are we building for?
%define redhat9 0
%define redhat7 1
%define redhat6 0
# Options for Redhat version 6.x:
# rpm -ba|--rebuild --define "rh6 1"
%{?rh6:%define redhat7 0}
%{?rh6:%define redhat6 1}
# some systems dont have initrddir defined
%{?_initrddir:%define _initrddir /etc/rc.d/init.d}
%if %{redhat9}
%define sysvinit milter.rc
%else # Redhat 7.x and earlier (multiple ps lines per thread)
%define sysvinit milter.rc7 %define sysvinit milter.rc7
%endif
# RH9, other systems (single ps line per process) # RH9, other systems (single ps line per process)
#define sysvinit milter.rc
%ifos Linux %ifos Linux
%define python python2.3 %define python python2.4
%else %else
%define python python %define python python
%endif %endif
@@ -24,8 +39,11 @@ Prefix: %{_prefix}
Vendor: Stuart D. Gathman <stuart@bmsi.com> Vendor: Stuart D. Gathman <stuart@bmsi.com>
Packager: Stuart D. Gathman <stuart@bmsi.com> Packager: Stuart D. Gathman <stuart@bmsi.com>
Url: http://www.bmsi.com/python/milter.html Url: http://www.bmsi.com/python/milter.html
Requires: %{python} >= 2.2.2, sendmail >= 8.12 Requires: %{python} >= 2.4, sendmail >= 8.12.10
BuildRequires: %{python}-devel >= 2.2.2, sendmail-devel >= 8.12 %ifos Linux
Requires: chkconfig
%endif
BuildRequires: %{python}-devel , sendmail-devel >= 8.12.10
%description %description
This is a python extension module to enable python scripts to This is a python extension module to enable python scripts to
@@ -43,8 +61,10 @@ env CFLAGS="$RPM_OPT_FLAGS" %{python} setup.py build
rm -rf $RPM_BUILD_ROOT rm -rf $RPM_BUILD_ROOT
%{python} setup.py install --root=$RPM_BUILD_ROOT --record=INSTALLED_FILES %{python} setup.py install --root=$RPM_BUILD_ROOT --record=INSTALLED_FILES
mkdir -p $RPM_BUILD_ROOT/var/log/milter mkdir -p $RPM_BUILD_ROOT/var/log/milter
mkdir -p $RPM_BUILD_ROOT/etc/mail
mkdir $RPM_BUILD_ROOT/var/log/milter/save mkdir $RPM_BUILD_ROOT/var/log/milter/save
cp bms.py milter.cfg $RPM_BUILD_ROOT/var/log/milter cp bms.py strike3.txt softfail.txt $RPM_BUILD_ROOT/var/log/milter
cp milter.cfg $RPM_BUILD_ROOT/etc/mail/pymilter.cfg
# logfile rotation # logfile rotation
mkdir -p $RPM_BUILD_ROOT/etc/logrotate.d mkdir -p $RPM_BUILD_ROOT/etc/logrotate.d
@@ -57,10 +77,15 @@ EOF
# purge saved defanged message copies # purge saved defanged message copies
mkdir -p $RPM_BUILD_ROOT/etc/cron.daily mkdir -p $RPM_BUILD_ROOT/etc/cron.daily
%ifos aix4.1
R=
%else
R='-r'
%endif
cat >$RPM_BUILD_ROOT/etc/cron.daily/milter <<'EOF' cat >$RPM_BUILD_ROOT/etc/cron.daily/milter <<'EOF'
#!/bin/sh #!/bin/sh
find /var/log/milter/save -mtime +7 | xargs -r rm find /var/log/milter/save -mtime +7 | xargs $R rm
EOF EOF
chmod a+x $RPM_BUILD_ROOT/etc/cron.daily/milter chmod a+x $RPM_BUILD_ROOT/etc/cron.daily/milter
@@ -94,6 +119,8 @@ EOF
chmod a+x $RPM_BUILD_ROOT/var/log/milter/start.sh chmod a+x $RPM_BUILD_ROOT/var/log/milter/start.sh
mkdir -p $RPM_BUILD_ROOT/var/run/milter mkdir -p $RPM_BUILD_ROOT/var/run/milter
mkdir -p $RPM_BUILD_ROOT/usr/share/sendmail-cf/hack
cp -p rhsbl.m4 $RPM_BUILD_ROOT/usr/share/sendmail-cf/hack
%ifos aix4.1 %ifos aix4.1
%post %post
@@ -103,6 +130,15 @@ mkssys -s milter -p /var/log/milter/start.sh -u 25 -S -n 15 -f 9 -G mail || :
if [ $1 = 0 ]; then if [ $1 = 0 ]; then
rmssys -s milter || : rmssys -s milter || :
fi fi
%else
%post
#echo "pythonsock has moved to /var/run/milter, update /etc/mail/sendmail.cf"
/sbin/chkconfig --add milter
%preun
if [ $1 = 0 ]; then
/sbin/chkconfig --del milter
fi
%endif %endif
%clean %clean
@@ -124,9 +160,61 @@ rm -rf $RPM_BUILD_ROOT
%dir /var/log/milter/save %dir /var/log/milter/save
%config /var/log/milter/start.sh %config /var/log/milter/start.sh
%config /var/log/milter/bms.py %config /var/log/milter/bms.py
%config /var/log/milter/milter.cfg %config /var/log/milter/strike3.txt
%config /var/log/milter/softfail.txt
%config(noreplace) /etc/mail/pymilter.cfg
/usr/share/sendmail-cf/hack/rhsbl.m4
%changelog %changelog
* Fri Jul 15 2005 Stuart Gathman <stuart@bmsi.com> 0.8.2-1
- Strict processing limits per SPF RFC
- Fixed several parsing bugs under RFC
- Support official IANA SPF record (type99)
- Honeypot support (requires pydspam-1.1.9)
- Extended SPF processing results beyond strict RFC limits
- Support original SES for local bounce protection (requires pysrs-0.30.10)
- Callback exception processing option in milter module
- Handle corrupt ZIP attachments
* Thu Jun 16 2005 Stuart Gathman <stuart@bmsi.com> 0.8.1-1
- Fix zip in zip loop in mime.py
- Fix HeaderParseError in bms.py header callback
- Check internal_domains for outgoing mail
- Fix inconsistent results from send_dsn
* Mon Jun 06 2005 Stuart Gathman <stuart@bmsi.com> 0.8.0-3
- properly log pydspam exceptions
* Sat Jun 04 2005 Stuart Gathman <stuart@bmsi.com> 0.8.0-2
- Include default softfail, strike3 templates
* Wed May 25 2005 Stuart Gathman <stuart@bmsi.com> 0.8.0-1
- Move Milter module to subpackage.
- DSN support for Three strikes rule and SPF SOFTFAIL
- Move /*mime*/ and dynip to Milter subpackage
- Fix SPF unknown mechanism list not cleared
- Make banned extensions configurable.
- Option to scan zipfiles for bad extensions.
* Tue Feb 08 2005 Stuart Gathman <stuart@bmsi.com> 0.7.3-1.EL3
- Support EL3 and Python2.4 (some scanning/defang support broken)
* Mon Aug 30 2004 Stuart Gathman <stuart@bmsi.com> 0.7.2-1
- Fix various SPF bugs
- Recognize dynamic PTR names, and don't count them as authentication.
- Three strikes and yer out rule.
- Block softfail by default unless valid PTR or HELO
- Return unknown for null mechanism
- Return unknown for invalid ip address in mechanism
- Try best guess on HELO also
- Expand setreply for common errors
- make rhsbl.m4 hack available for sendmail.mc
* Sun Aug 22 2004 Stuart Gathman <stuart@bmsi.com> 0.7.1-1
- Handle modifying mislabeled multipart messages without an exception
- Support setbacklog, setmlreply
- allow multi-recipient CBV
- return TEMPFAIL for SPF softfail
* Fri Jul 23 2004 Stuart Gathman <stuart@bmsi.com> 0.7.0-1
- SPF check hello name
- Move pythonsock to /var/run/milter
- Move milter.cfg to /etc/mail/pymilter.cfg
- Check M$ style XML CID records by converting to SPF
- Recognize, but never match ip6 until we properly support it.
- Option to reject when no PTR and no SPF
* Fri Apr 09 2004 Stuart Gathman <stuart@bmsi.com> 0.6.9-1 * Fri Apr 09 2004 Stuart Gathman <stuart@bmsi.com> 0.6.9-1
- Validate spf.py against test suite, and add Received-SPF support to spf.py - Validate spf.py against test suite, and add Received-SPF support to spf.py
- Support best_guess for SPF - Support best_guess for SPF
+182 -37
View File
@@ -1,4 +1,5 @@
/* Copyright (C) 2001 James Niemira (niemira@colltech.com, urmane@urmane.org) /* Copyright (C) 2001 James Niemira (niemira@colltech.com, urmane@urmane.org)
* Portions Copyright (C) 2001,2002,2003,2004 Stuart Gathman (stuart@bmsi.com)
* *
* This program is free software; you can redistribute it and/or * This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License * modify it under the terms of the GNU General Public License
@@ -33,6 +34,33 @@ $ python setup.py help
libraries=["milter","smutil","resolv"] libraries=["milter","smutil","resolv"]
* $Log$ * $Log$
* Revision 1.5 2005/06/24 04:20:07 customdesigned
* Report context allocation error.
*
* Revision 1.4 2005/06/24 04:12:43 customdesigned
* Remove unused name argument to generic wrappers.
*
* Revision 1.3 2005/06/24 03:57:35 customdesigned
* Handle close called before connect.
*
* Revision 1.2 2005/06/02 04:18:55 customdesigned
* Update copyright notices after reading article on /.
*
* Revision 1.1.1.2 2005/05/31 18:09:06 customdesigned
* Release 0.7.1
*
* Revision 2.31 2004/08/23 02:24:36 stuart
* Support setbacklog
*
* Revision 2.30 2004/08/21 20:29:53 stuart
* Support option of 11 lines max for mlreply.
*
* Revision 2.29 2004/08/21 04:14:29 stuart
* mlreply support
*
* Revision 2.28 2004/08/21 02:45:21 stuart
* Don't leak int constants if module unloaded.
*
* Revision 2.27 2004/04/06 03:19:59 stuart * Revision 2.27 2004/04/06 03:19:59 stuart
* Release 0.6.8 * Release 0.6.8
* *
@@ -127,11 +155,20 @@ $ python setup.py help
* *
*/ */
#ifndef MAX_ML_REPLY
#define MAX_ML_REPLY 32
#endif
#if MAX_ML_REPLY != 1 && MAX_ML_REPLY != 32 && MAX_ML_REPLY != 11
#error MAX_ML_REPLY must be 1 or 11 or 32
#endif
#define _FFR_MULTILINE (MAX_ML_REPLY > 1)
#include <pthread.h> #include <pthread.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <Python.h> #include <Python.h>
#include <libmilter/mfapi.h> #include <libmilter/mfapi.h>
/* See if we have IPv4 and/or IPv6 support in this OS and in /* See if we have IPv4 and/or IPv6 support in this OS and in
* libmilter. We need to make several macro tests because some OS's * libmilter. We need to make several macro tests because some OS's
* may define some if IPv6 is only partially supported, and we may * may define some if IPv6 is only partially supported, and we may
@@ -169,7 +206,7 @@ $ python setup.py help
/* Yes, these are static. If you need multiple different callbacks, */ /* Yes, these are static. If you need multiple different callbacks, */
/* it's cleaner to use multiple filters. */ /* it's cleaner to use multiple filters, or convert to OO method calls. */
static PyObject *connect_callback = NULL; static PyObject *connect_callback = NULL;
static PyObject *helo_callback = NULL; static PyObject *helo_callback = NULL;
static PyObject *envfrom_callback = NULL; static PyObject *envfrom_callback = NULL;
@@ -214,8 +251,11 @@ _get_context(SMFICTX *ctx) {
PyEval_AcquireThread(t); /* lock interp */ PyEval_AcquireThread(t); /* lock interp */
self = PyObject_New(milter_ContextObject,&milter_ContextType); self = PyObject_New(milter_ContextObject,&milter_ContextType);
if (!self) { if (!self) {
/* Can't pass on exception since we are called from libmilter */ /* Report and clear exception since we are called from libmilter */
PyErr_Clear(); if (PyErr_Occurred()) {
PyErr_Print();
PyErr_Clear();
}
PyThreadState_Clear(t); PyThreadState_Clear(t);
PyEval_ReleaseThread(t); PyEval_ReleaseThread(t);
PyThreadState_Delete(t); PyThreadState_Delete(t);
@@ -306,7 +346,8 @@ CHGHDRS - filter may change/delete headers";
static PyObject * static PyObject *
milter_set_flags(PyObject *self, PyObject *args) { milter_set_flags(PyObject *self, PyObject *args) {
if (!PyArg_ParseTuple(args, "i", &description.xxfi_flags)) return NULL; if (!PyArg_ParseTuple(args, "i:set_flags", &description.xxfi_flags))
return NULL;
Py_INCREF(Py_None); Py_INCREF(Py_None);
return Py_None; return Py_None;
} }
@@ -472,6 +513,28 @@ milter_set_close_callback(PyObject *self, PyObject *args) {
return generic_set_callback(args, "O:set_close_callback", &close_callback); return generic_set_callback(args, "O:set_close_callback", &close_callback);
} }
static int exception_policy = SMFIS_TEMPFAIL;
static char milter_set_exception_policy__doc__[] =
"set_exception_policy(i) -> None\n\
Sets the policy for untrapped Python exceptions during a callback.\n\
Must be one of TEMPFAIL,REJECT,CONTINUE";
static PyObject *
milter_set_exception_policy(PyObject *self, PyObject *args) {
int i;
if (!PyArg_ParseTuple(args, "i:set_exception_policy", &i))
return NULL;
switch (i) {
case SMFIS_REJECT: case SMFIS_TEMPFAIL: case SMFIS_CONTINUE:
exception_policy = i;
Py_INCREF(Py_None);
return Py_None;
}
PyErr_SetString(MilterError,"invalid exception policy");
return NULL;
}
/** Report and clear any python exception before returning to libmilter. /** Report and clear any python exception before returning to libmilter.
The interpreter is locked when we are called, and we unlock it. */ The interpreter is locked when we are called, and we unlock it. */
static int _report_exception(milter_ContextObject *self) { static int _report_exception(milter_ContextObject *self) {
@@ -479,8 +542,15 @@ static int _report_exception(milter_ContextObject *self) {
PyErr_Print(); PyErr_Print();
PyErr_Clear(); /* must clear since not returning to python */ PyErr_Clear(); /* must clear since not returning to python */
PyEval_ReleaseThread(self->t); PyEval_ReleaseThread(self->t);
smfi_setreply(self->ctx, "451", "4.3.0", "Filter failure"); switch (exception_policy) {
return SMFIS_TEMPFAIL; case SMFIS_REJECT:
smfi_setreply(self->ctx, "554", "5.3.0", "Filter failure");
return SMFIS_REJECT;
case SMFIS_TEMPFAIL:
smfi_setreply(self->ctx, "451", "4.3.0", "Filter failure");
return SMFIS_TEMPFAIL;
}
return SMFIS_CONTINUE;
} }
PyEval_ReleaseThread(self->t); PyEval_ReleaseThread(self->t);
return SMFIS_CONTINUE; return SMFIS_CONTINUE;
@@ -591,7 +661,7 @@ milter_wrap_helo(SMFICTX *ctx, char *helohost) {
} }
static int static int
generic_env_wrapper(SMFICTX *ctx, PyObject*cb, char **argv, const char *name) { generic_env_wrapper(SMFICTX *ctx, PyObject*cb, char **argv) {
PyObject *arglist; PyObject *arglist;
milter_ContextObject *self; milter_ContextObject *self;
int count = 0; int count = 0;
@@ -628,12 +698,12 @@ generic_env_wrapper(SMFICTX *ctx, PyObject*cb, char **argv, const char *name) {
static int static int
milter_wrap_envfrom(SMFICTX *ctx, char **argv) { milter_wrap_envfrom(SMFICTX *ctx, char **argv) {
return generic_env_wrapper(ctx,envfrom_callback,argv,"milter_wrap_envfrom"); return generic_env_wrapper(ctx,envfrom_callback,argv);
} }
static int static int
milter_wrap_envrcpt(SMFICTX *ctx, char **argv) { milter_wrap_envrcpt(SMFICTX *ctx, char **argv) {
return generic_env_wrapper(ctx,envrcpt_callback,argv,"milter_wrap_envrcpt"); return generic_env_wrapper(ctx,envrcpt_callback,argv);
} }
static int static int
@@ -649,7 +719,7 @@ milter_wrap_header(SMFICTX *ctx, char *headerf, char *headerv) {
} }
static int static int
generic_noarg_wrapper(SMFICTX *ctx,PyObject *cb,const char *name) { generic_noarg_wrapper(SMFICTX *ctx,PyObject *cb) {
PyObject *arglist; PyObject *arglist;
milter_ContextObject *c; milter_ContextObject *c;
if (cb == NULL) return SMFIS_CONTINUE; if (cb == NULL) return SMFIS_CONTINUE;
@@ -661,7 +731,7 @@ generic_noarg_wrapper(SMFICTX *ctx,PyObject *cb,const char *name) {
static int static int
milter_wrap_eoh(SMFICTX *ctx) { milter_wrap_eoh(SMFICTX *ctx) {
return generic_noarg_wrapper(ctx,eoh_callback,"milter_wrap_eoh"); return generic_noarg_wrapper(ctx,eoh_callback);
} }
static int static int
@@ -679,18 +749,31 @@ milter_wrap_body(SMFICTX *ctx, u_char *bodyp, size_t bodylen) {
static int static int
milter_wrap_eom(SMFICTX *ctx) { milter_wrap_eom(SMFICTX *ctx) {
return generic_noarg_wrapper(ctx,eom_callback,"milter_wrap_eom"); return generic_noarg_wrapper(ctx,eom_callback);
} }
static int static int
milter_wrap_abort(SMFICTX *ctx) { milter_wrap_abort(SMFICTX *ctx) {
/* libmilter still calls close after abort */ /* libmilter still calls close after abort */
return generic_noarg_wrapper(ctx,abort_callback,"milter_wrap_abort"); return generic_noarg_wrapper(ctx,abort_callback);
} }
static int static int
milter_wrap_close(SMFICTX *ctx) { milter_wrap_close(SMFICTX *ctx) {
int r = generic_noarg_wrapper(ctx,close_callback,"milter_wrap_close"); /* xxfi_close can be called out of order - even before connect.
* There may not yet be a private context pointer. To avoid
* creating a ThreadContext and allocating a milter context only
* to destroy them, and to avoid invoking the python close_callback when
* connect has never been called, we don't use generic_noarg_wrapper here. */
PyObject *cb = close_callback;
milter_ContextObject *self = smfi_getpriv(ctx);
int r = SMFIS_CONTINUE;
if (self != NULL && cb != NULL && self->ctx == ctx) {
PyObject *arglist;
PyEval_AcquireThread(self->t);
arglist = Py_BuildValue("(O)", self);
r = _generic_wrapper(self, cb, arglist);
}
/* FIXME: It is inefficient to have released the interp lock only to /* FIXME: It is inefficient to have released the interp lock only to
acquire it again in _clear_context. We can tell _generic_return and acquire it again in _clear_context. We can tell _generic_return and
friends not to release the lock by, for instance, setting self->t to NULL. friends not to release the lock by, for instance, setting self->t to NULL.
@@ -746,6 +829,18 @@ milter_setdbg(PyObject *self, PyObject *args) {
return _generic_return(smfi_setdbg(val), "cannot set debug value"); return _generic_return(smfi_setdbg(val), "cannot set debug value");
} }
static char milter_setbacklog__doc__[] =
"setbacklog(int) -> None\n\
Set the TCP connection queue size for the milter socket.";
static PyObject *
milter_setbacklog(PyObject *self, PyObject *args) {
int val;
if (!PyArg_ParseTuple(args, "i:setbacklog", &val)) return NULL;
return _generic_return(smfi_setbacklog(val), "cannot set backlog");
}
static char milter_settimeout__doc__[] = static char milter_settimeout__doc__[] =
"settimeout(int) -> None\n\ "settimeout(int) -> None\n\
Set the time (in seconds) that sendmail will wait before\n\ Set the time (in seconds) that sendmail will wait before\n\
@@ -820,13 +915,54 @@ static PyObject *
milter_setreply(PyObject *self, PyObject *args) { milter_setreply(PyObject *self, PyObject *args) {
char *rcode; char *rcode;
char *xcode; char *xcode;
char *message; char *message[MAX_ML_REPLY];
char fmt[MAX_ML_REPLY + 16];
SMFICTX *ctx; SMFICTX *ctx;
if (!PyArg_ParseTuple(args, "szz:setreply", &rcode, &xcode, &message)) int i;
strcpy(fmt,"sz|");
for (i = 0; i < MAX_ML_REPLY; ++i) {
message[i] = 0;
fmt[i+3] = 's';
}
strcpy(fmt+i+3,":setreply");
if (!PyArg_ParseTuple(args, fmt,
&rcode, &xcode, message
#if MAX_ML_REPLY > 1
,message+1,message+2,message+3,message+4,message+5,message+6,
message+7,message+8,message+9,message+10
#if MAX_ML_REPLY > 11
,message+11,message+12,message+13,message+14,message+15,
message+16,message+17,message+18,message+19,message+20,
message+21,message+22,message+23,message+24,message+25,
message+26,message+27,message+28,message+29,message+30,
message+31
#endif
#endif
))
return NULL; return NULL;
ctx = _find_context(self); ctx = _find_context(self);
if (ctx == NULL) return NULL; if (ctx == NULL) return NULL;
return _generic_return(smfi_setreply(ctx, rcode, xcode, message), #if MAX_ML_REPLY > 1
/*
* C varargs might be convenient for some things, but they sure are a pain
* when the number of args is not known at compile time.
*/
if (message[0] && message[1])
return _generic_return(smfi_setmlreply(ctx, rcode, xcode,
message[0],
message[1],message[2],message[3],message[4],message[5],
message[6],message[7],message[8],message[9],message[10],
#if MAX_ML_REPLY > 11
message[11],message[12],message[13],message[14],message[15],
message[16],message[17],message[18],message[19],message[20],
message[21],message[22],message[23],message[24],message[25],
message[26],message[27],message[28],message[29],message[30],
message[31],
#endif
(char *)0
), "cannot set reply");
#endif
return _generic_return(smfi_setreply(ctx, rcode, xcode, message[0]),
"cannot set reply"); "cannot set reply");
} }
@@ -986,7 +1122,7 @@ milter_getpriv(PyObject *self, PyObject *args) {
return o; return o;
} }
#if _FFR_QUARANTINE #ifdef SMFIF_QUARANTINE
static char milter_quarantine__doc__[] = static char milter_quarantine__doc__[] =
"quarantine(string) -> None\n\ "quarantine(string) -> None\n\
Place the message in quarantine. A string with a description of the reason\n\ Place the message in quarantine. A string with a description of the reason\n\
@@ -1035,7 +1171,7 @@ static PyMethodDef context_methods[] = {
{ "replacebody", milter_replacebody, METH_VARARGS, milter_replacebody__doc__}, { "replacebody", milter_replacebody, METH_VARARGS, milter_replacebody__doc__},
{ "setpriv", milter_setpriv, METH_VARARGS, milter_setpriv__doc__}, { "setpriv", milter_setpriv, METH_VARARGS, milter_setpriv__doc__},
{ "getpriv", milter_getpriv, METH_VARARGS, milter_getpriv__doc__}, { "getpriv", milter_getpriv, METH_VARARGS, milter_getpriv__doc__},
#if _FFR_QUARANTINE #ifdef SMFIF_QUARANTINE
{ "quarantine", milter_quarantine, METH_VARARGS, milter_quarantine__doc__}, { "quarantine", milter_quarantine, METH_VARARGS, milter_quarantine__doc__},
#endif #endif
#if _FFR_SMFI_PROGRESS #if _FFR_SMFI_PROGRESS
@@ -1077,10 +1213,13 @@ static PyMethodDef milter_methods[] = {
{ "set_eom_callback", milter_set_eom_callback, METH_VARARGS, milter_set_eom_callback__doc__}, { "set_eom_callback", milter_set_eom_callback, METH_VARARGS, milter_set_eom_callback__doc__},
{ "set_abort_callback", milter_set_abort_callback, METH_VARARGS, milter_set_abort_callback__doc__}, { "set_abort_callback", milter_set_abort_callback, METH_VARARGS, milter_set_abort_callback__doc__},
{ "set_close_callback", milter_set_close_callback, METH_VARARGS, milter_set_close_callback__doc__}, { "set_close_callback", milter_set_close_callback, METH_VARARGS, milter_set_close_callback__doc__},
{ "set_exception_policy", milter_set_exception_policy,METH_VARARGS, milter_set_exception_policy__doc__},
{ "register", milter_register, METH_VARARGS, milter_register__doc__},
{ "register", milter_register, METH_VARARGS, milter_register__doc__}, { "register", milter_register, METH_VARARGS, milter_register__doc__},
{ "main", milter_main, METH_VARARGS, milter_main__doc__}, { "main", milter_main, METH_VARARGS, milter_main__doc__},
{ "setdbg", milter_setdbg, METH_VARARGS, milter_setdbg__doc__}, { "setdbg", milter_setdbg, METH_VARARGS, milter_setdbg__doc__},
{ "settimeout", milter_settimeout, METH_VARARGS, milter_settimeout__doc__}, { "settimeout", milter_settimeout, METH_VARARGS, milter_settimeout__doc__},
{ "setbacklog", milter_setbacklog, METH_VARARGS, milter_setbacklog__doc__},
{ "setconn", milter_setconn, METH_VARARGS, milter_setconn__doc__}, { "setconn", milter_setconn, METH_VARARGS, milter_setconn__doc__},
{ "stop", milter_stop, METH_VARARGS, milter_stop__doc__}, { "stop", milter_stop, METH_VARARGS, milter_stop__doc__},
{ NULL, NULL } { NULL, NULL }
@@ -1116,6 +1255,12 @@ allowing one to write email filters directly in Python.\n\
Libmilter is currently marked FFR, and needs to be explicitly installed.\n\ Libmilter is currently marked FFR, and needs to be explicitly installed.\n\
See <sendmailsource>/libmilter/README for details on setting it up.\n"; See <sendmailsource>/libmilter/README for details on setting it up.\n";
static void setitem(PyObject *d,const char *name,long val) {
PyObject *v = PyInt_FromLong(val);
PyDict_SetItemString(d,name,v);
Py_DECREF(v);
}
void void
initmilter(void) { initmilter(void) {
PyObject *m, *d; PyObject *m, *d;
@@ -1125,24 +1270,24 @@ initmilter(void) {
d = PyModule_GetDict(m); d = PyModule_GetDict(m);
MilterError = PyErr_NewException("milter.error", NULL, NULL); MilterError = PyErr_NewException("milter.error", NULL, NULL);
PyDict_SetItemString(d,"error", MilterError); PyDict_SetItemString(d,"error", MilterError);
PyDict_SetItemString(d,"SUCCESS", PyInt_FromLong((long) MI_SUCCESS)); setitem(d,"SUCCESS", MI_SUCCESS);
PyDict_SetItemString(d,"FAILURE", PyInt_FromLong((long) MI_FAILURE)); setitem(d,"FAILURE", MI_FAILURE);
PyDict_SetItemString(d,"VERSION", PyInt_FromLong((long) SMFI_VERSION)); setitem(d,"VERSION", SMFI_VERSION);
PyDict_SetItemString(d,"ADDHDRS", PyInt_FromLong((long) SMFIF_ADDHDRS)); setitem(d,"ADDHDRS", SMFIF_ADDHDRS);
PyDict_SetItemString(d,"CHGBODY", PyInt_FromLong((long) SMFIF_CHGBODY)); setitem(d,"CHGBODY", SMFIF_CHGBODY);
PyDict_SetItemString(d,"MODBODY", PyInt_FromLong((long) SMFIF_MODBODY)); setitem(d,"MODBODY", SMFIF_MODBODY);
PyDict_SetItemString(d,"ADDRCPT", PyInt_FromLong((long) SMFIF_ADDRCPT)); setitem(d,"ADDRCPT", SMFIF_ADDRCPT);
PyDict_SetItemString(d,"DELRCPT", PyInt_FromLong((long) SMFIF_DELRCPT)); setitem(d,"DELRCPT", SMFIF_DELRCPT);
PyDict_SetItemString(d,"CHGHDRS", PyInt_FromLong((long) SMFIF_CHGHDRS)); setitem(d,"CHGHDRS", SMFIF_CHGHDRS);
PyDict_SetItemString(d,"V1_ACTS", PyInt_FromLong((long) SMFI_V1_ACTS)); setitem(d,"V1_ACTS", SMFI_V1_ACTS);
PyDict_SetItemString(d,"V2_ACTS", PyInt_FromLong((long) SMFI_V2_ACTS)); setitem(d,"V2_ACTS", SMFI_V2_ACTS);
PyDict_SetItemString(d,"CURR_ACTS", PyInt_FromLong((long) SMFI_CURR_ACTS)); setitem(d,"CURR_ACTS", SMFI_CURR_ACTS);
#ifdef SMFIF_QUARANTINE #ifdef SMFIF_QUARANTINE
PyDict_SetItemString(d,"QUARANTINE",PyInt_FromLong((long)SMFIF_QUARANTINE)); setitem(d,"QUARANTINE",SMFIF_QUARANTINE);
#endif #endif
PyDict_SetItemString(d,"CONTINUE", PyInt_FromLong((long) SMFIS_CONTINUE)); setitem(d,"CONTINUE", SMFIS_CONTINUE);
PyDict_SetItemString(d,"REJECT", PyInt_FromLong((long) SMFIS_REJECT)); setitem(d,"REJECT", SMFIS_REJECT);
PyDict_SetItemString(d,"DISCARD", PyInt_FromLong((long) SMFIS_DISCARD)); setitem(d,"DISCARD", SMFIS_DISCARD);
PyDict_SetItemString(d,"ACCEPT", PyInt_FromLong((long) SMFIS_ACCEPT)); setitem(d,"ACCEPT", SMFIS_ACCEPT);
PyDict_SetItemString(d,"TEMPFAIL", PyInt_FromLong((long) SMFIS_TEMPFAIL)); setitem(d,"TEMPFAIL", SMFIS_TEMPFAIL);
} }
+193 -277
View File
@@ -1,4 +1,50 @@
# $Log$ # $Log$
# Revision 1.4 2005/06/17 01:49:39 customdesigned
# Handle zip within zip.
#
# Revision 1.3 2005/06/02 15:00:17 customdesigned
# Configure banned extensions. Scan zipfile option with test case.
#
# Revision 1.2 2005/06/02 04:18:55 customdesigned
# Update copyright notices after reading article on /.
#
# Revision 1.1.1.4 2005/05/31 18:23:49 customdesigned
# Development changes since 0.7.2
#
# Revision 1.62 2005/02/14 22:31:17 stuart
# _parseparam replacement not needed for python2.4
#
# Revision 1.61 2005/02/12 02:11:11 stuart
# Pass unit tests with python2.4.
#
# Revision 1.60 2005/02/11 18:34:14 stuart
# Handle garbage after quote in boundary.
#
# Revision 1.59 2005/02/10 01:10:59 stuart
# Fixed MimeMessage.ismodified()
#
# Revision 1.58 2005/02/10 00:56:49 stuart
# Runs with python2.4. Defang not working correctly - more work needed.
#
# Revision 1.57 2004/11/20 16:37:52 stuart
# fix regex for splitting header and body
#
# Revision 1.56 2004/11/09 20:33:51 stuart
# Recognize more dynamic PTR variations.
#
# Revision 1.55 2004/10/06 21:39:20 stuart
# Handle message attachments with boundary errors by not parsing them
# until needed.
#
# Revision 1.54 2004/08/18 01:59:46 stuart
# Handle mislabeled multipart messages
#
# Revision 1.53 2004/04/24 22:53:20 stuart
# Rename some local variables to avoid shadowing builtins
#
# Revision 1.52 2004/04/24 22:47:13 stuart
# Convert header values to str
#
# Revision 1.51 2004/03/25 03:19:10 stuart # Revision 1.51 2004/03/25 03:19:10 stuart
# Correctly defang rfc822 attachments when boundary specified with # Correctly defang rfc822 attachments when boundary specified with
# content-type message/rfc822. # content-type message/rfc822.
@@ -28,183 +74,61 @@
# with a warning message. # with a warning message.
# Author: Stuart D. Gathman <stuart@bmsi.com> # Author: Stuart D. Gathman <stuart@bmsi.com>
# Copyright 2001 Business Management Systems, Inc. # Copyright 2001,2002,2003,2004,2005 Business Management Systems, Inc.
# This code is under GPL. See COPYING for details. # This code is under the GNU General Public License. See COPYING for details.
import StringIO import StringIO
import socket import socket
import Milter import Milter
import zipfile
import email import email
import email.Message import email.Message
from email.Message import Message from email.Message import Message
from email.Generator import Generator from email.Generator import Generator
from email.Utils import quote from email.Utils import quote
from email import Utils from email import Utils
from email.Parser import Parser
from email import Errors
from types import ListType,StringType from types import ListType,StringType
# Enhance email.Parser def zipnames(txt):
# - Fix _parsebody to decode message attachments before parsing fp = StringIO.StringIO(txt)
zipf = zipfile.ZipFile(fp,'r')
names = []
for nm in zipf.namelist():
names.append(('zipname',nm))
if nm.lower().endswith('.zip'):
names += zipnames(zipf.read(nm))
return names
from email.Parser import Parser class MimeGenerator(Generator):
try: from email.Parser import NLCRE def _dispatch(self, msg):
except: from email.Parser import nlcre as NLCRE # Get the Content-Type: for the message, then try to dispatch to
# self._handle_<maintype>_<subtype>(). If there's no handler for the
# full MIME type, then dispatch to self._handle_<maintype>(). If
# that's missing too, then dispatch to self._writeBody().
main = msg.get_content_maintype()
if msg.is_multipart() and main.lower() != 'multipart':
self._handle_multipart(msg)
else:
Generator._dispatch(self,msg)
from email import Errors def unquote(s):
class MimeParser(Parser):
# This is a copy of _parsebody from email.Parser, with a fix
# for message attachments. I couldn't find a smaller way to patch it
# in a subclass.
def _parsebody(self, container, fp, firstbodyline=None):
# Parse the body, but first split the payload on the content-type
# boundary if present.
boundary = container.get_boundary()
isdigest = (container.get_content_type() == 'multipart/digest')
# If there's a boundary, split the payload text into its constituent
# parts and parse each separately. Otherwise, just parse the rest of
# the body as a single message. Note: any exceptions raised in the
# recursive parse need to have their line numbers coerced.
if boundary:
preamble = epilogue = None
# Split into subparts. The first boundary we're looking for won't
# always have a leading newline since we're at the start of the
# body text, and there's not always a preamble before the first
# boundary.
separator = '--' + boundary
payload = fp.read()
if firstbodyline is not None:
payload = firstbodyline + '\n' + payload
# We use an RE here because boundaries can have trailing
# whitespace.
mo = re.search(
r'(?P<sep>' + re.escape(separator) + r')(?P<ws>[ \t]*)',
payload)
if not mo:
if self._strict:
raise Errors.BoundaryError(
"Couldn't find starting boundary: %s" % boundary)
container.set_payload(payload)
return
start = mo.start()
if start > 0:
# there's some pre-MIME boundary preamble
preamble = payload[0:start]
# Find out what kind of line endings we're using
start += len(mo.group('sep')) + len(mo.group('ws'))
mo = NLCRE.search(payload, start)
if mo:
start += len(mo.group(0))
# We create a compiled regexp first because we need to be able to
# specify the start position, and the module function doesn't
# support this signature. :(
cre = re.compile('(?P<sep>\r\n|\r|\n)' +
re.escape(separator) + '--')
mo = cre.search(payload, start)
if mo:
terminator = mo.start()
linesep = mo.group('sep')
if mo.end() < len(payload):
# There's some post-MIME boundary epilogue
epilogue = payload[mo.end():]
elif self._strict:
raise Errors.BoundaryError(
"Couldn't find terminating boundary: %s" % boundary)
else:
# Handle the case of no trailing boundary. Check that it ends
# in a blank line. Some cases (spamspamspam) don't even have
# that!
mo = re.search('(?P<sep>\r\n|\r|\n){2}$', payload)
if not mo:
mo = re.search('(?P<sep>\r\n|\r|\n)$', payload)
if not mo:
raise Errors.BoundaryError(
'No terminating boundary and no trailing empty line')
linesep = mo.group('sep')
terminator = len(payload)
# We split the textual payload on the boundary separator, which
# includes the trailing newline. If the container is a
# multipart/digest then the subparts are by default message/rfc822
# instead of text/plain. In that case, they'll have a optional
# block of MIME headers, then an empty line followed by the
# message headers.
parts = re.split(
linesep + re.escape(separator) + r'[ \t]*' + linesep,
payload[start:terminator])
for part in parts:
if isdigest:
if part.startswith(linesep):
# There's no header block so create an empty message
# object as the container, and lop off the newline so
# we can parse the sub-subobject
msgobj = self._class()
part = part[len(linesep):]
else:
parthdrs, part = part.split(linesep+linesep, 1)
# msgobj in this case is the "message/rfc822" container
msgobj = self.parsestr(parthdrs, headersonly=1)
# while submsgobj is the message itself
msgobj.set_default_type('message/rfc822')
maintype = msgobj.get_content_maintype()
if maintype in ('message', 'multipart'):
submsgobj = self.parsestr(part)
msgobj.attach(submsgobj)
else:
msgobj.set_payload(part)
else:
msgobj = self.parsestr(part)
container.preamble = preamble
container.epilogue = epilogue
container.attach(msgobj)
elif container.get_main_type() == 'multipart':
# Very bad. A message is a multipart with no boundary!
raise Errors.BoundaryError(
'multipart message with no defined boundary')
elif container.get_type() == 'message/delivery-status':
# This special kind of type contains blocks of headers separated
# by a blank line. We'll represent each header block as a
# separate Message object
blocks = []
while True:
blockmsg = self._class()
self._parseheaders(blockmsg, fp)
if not len(blockmsg):
# No more header blocks left
break
blocks.append(blockmsg)
container.set_payload(blocks)
elif container.get_main_type() == 'message':
# Create a container for the payload, but watch out for there not
# being any headers left
container.set_payload(fp.read())
fp = StringIO.StringIO(container.get_payload(decode=True))
try:
msg = self.parse(fp)
except Errors.HeaderParseError:
msg = self._class()
self._parsebody(msg, fp)
container.set_payload([msg])
else:
text = fp.read()
if firstbodyline is not None:
text = firstbodyline + '\n' + text
container.set_payload(text)
def unquote(str):
"""Remove quotes from a string.""" """Remove quotes from a string."""
if len(str) > 1: if len(s) > 1:
if str.startswith('"'): if s.startswith('"'):
if str.endswith('"'): if s.endswith('"'):
str = str[1:-1] s = s[1:-1]
else: # remove garbage after trailing quote else: # remove garbage after trailing quote
try: str = str[1:str[1:].index('"')+1] try: s = s[1:s[1:].index('"')+1]
except: return str except:
return str.replace('\\\\', '\\').replace('\\"', '"') return s
if str.startswith('<') and str.endswith('>'): return s.replace('\\\\', '\\').replace('\\"', '"')
return str[1:-1] if s.startswith('<') and s.endswith('>'):
return str return s[1:-1]
return s
from types import TupleType from types import TupleType
@@ -214,27 +138,11 @@ def _unquotevalue(value):
else: else:
return unquote(value) return unquote(value)
email.Message._unquotevalue = _unquotevalue #email.Message._unquotevalue = _unquotevalue
def _parseparam(str): from email.Message import _parseparam
plist = []
while str[:1] == ';':
str = str[1:]
end = str.find(';')
while end > 0 and (str.count('"',0,end) & 1):
end = str.find(';',end + 1)
if end < 0: end = len(str)
f = str[:end]
if '=' in f:
i = f.index('=')
f = f[:i].strip().lower() + \
'=' + f[i+1:].strip()
plist.append(f.strip())
str = str[end:]
return plist
# Enhance email.Message # Enhance email.Message
# - Fix getparam to parse attributes IE style
# - Provide a headerchange event for integration with Milter # - Provide a headerchange event for integration with Milter
# Headerchange attribute can be assigned a function to be called when # Headerchange attribute can be assigned a function to be called when
# changing headers. The signature is: # changing headers. The signature is:
@@ -245,64 +153,19 @@ class MimeMessage(Message):
"""Version of email.Message.Message compatible with old mime module """Version of email.Message.Message compatible with old mime module
""" """
def __init__(self,fp=None,seekable=1): def __init__(self,fp=None,seekable=1):
Message.__init__(self)
self.headerchange = None self.headerchange = None
self.submsg = None self.submsg = None
Message.__init__(self) self.modified = False
self.fp = fp
if fp:
parser = MimeParser(MimeMessage)
self.startofheaders = fp.tell()
parser._parseheaders(self,fp)
self.startofbody = fp.tell()
parser._parsebody(self,fp)
for part in self.walk():
part.modified = False
def rewindbody(self): def get_param(self, param, failobj=None, header='content-type', unquote=True):
return self.fp.seek(self.startofbody) val = Message.get_param(self,param,failobj,header,unquote)
if val != failobj and param == 'boundary' and unquote:
# unquote boundaries an extra time, test case testDefang5
return _unquotevalue(val)
return val
# override param parsing to handle quotes getfilename = Message.get_filename
def _get_params_preserve(self,failobj=None,header='content-type'):
"Return all parameter names and values. Use parser that handles quotes."
missing = []
value = self.get(header, missing)
if value is missing:
return failobj
params = []
for p in _parseparam(';' + value):
try:
name, val = p.split('=', 1)
name = name.strip()
val = val.strip()
except ValueError:
# Must have been a bare attribute
name = p.strip()
val = ''
params.append((name, val))
params = Utils.decode_params(params)
return params
def get_filename(self, failobj=None):
"""Return the filename associated with the payload if present.
The filename is extracted from the Content-Disposition header's
`filename' parameter, and it is unquoted.
"""
missing = []
filename = self.get_param('filename', missing, 'content-disposition')
if filename is missing:
return failobj
if isinstance(filename, TupleType):
# It's an RFC 2231 encoded parameter
newvalue = _unquotevalue(filename)
if newvalue[0]:
return unicode(newvalue[2], newvalue[0])
return unicode(newvalue[2])
else:
newvalue = _unquotevalue(filename.strip())
return newvalue
getfilename = get_filename
ismultipart = Message.is_multipart ismultipart = Message.is_multipart
getheaders = Message.get_all getheaders = Message.get_all
gettype = Message.get_content_type gettype = Message.get_content_type
@@ -313,11 +176,11 @@ class MimeMessage(Message):
def getname(self): def getname(self):
return self.get_param('name') return self.get_param('name')
def getnames(self): def getnames(self,scan_zip=False):
"""Return a list of (attr,name) pairs of attributes that IE might """Return a list of (attr,name) pairs of attributes that IE might
interpret as a name - and hence decide to execute this message.""" interpret as a name - and hence decide to execute this message."""
names = [] names = []
for attr,val in self.get_params([]): for attr,val in self._get_params_preserve([],'content-type'):
if isinstance(val, TupleType): if isinstance(val, TupleType):
# It's an RFC 2231 encoded parameter # It's an RFC 2231 encoded parameter
newvalue = _unquotevalue(val) newvalue = _unquotevalue(val)
@@ -328,12 +191,19 @@ class MimeMessage(Message):
else: else:
val = _unquotevalue(val.strip()) val = _unquotevalue(val.strip())
names.append((attr,val)) names.append((attr,val))
return names + [("filename",self.get_filename())] names += [("filename",self.get_filename())]
if scan_zip:
for key,name in tuple(names): # copy by converting to tuple
if name and name.lower().endswith('.zip'):
txt = self.get_payload(decode=True)
if txt.strip():
names += zipnames(txt)
return names
def ismodified(self): def ismodified(self):
"True if this message or a subpart has been modified." "True if this message or a subpart has been modified."
if not self.is_multipart(): if not self.is_multipart():
if self.submsg: if isinstance(self.submsg,Message):
return self.submsg.ismodified() return self.submsg.ismodified()
return self.modified return self.modified
if self.modified: return True if self.modified: return True
@@ -343,16 +213,22 @@ class MimeMessage(Message):
def dump(self,file,unixfrom=False): def dump(self,file,unixfrom=False):
"Write this message (and all subparts) to a file" "Write this message (and all subparts) to a file"
g = Generator(file) g = MimeGenerator(file)
g.flatten(self,unixfrom=unixfrom) g.flatten(self,unixfrom=unixfrom)
def as_string(self, unixfrom=False):
"Return the entire formatted message as a string."
fp = StringIO.StringIO()
self.dump(fp,unixfrom=unixfrom)
return fp.getvalue()
def getencoding(self): def getencoding(self):
return self.get('content-transfer-encoding',None) return self.get('content-transfer-encoding',None)
# Decode body to stream according to transfer encoding, return encoding name # Decode body to stream according to transfer encoding, return encoding name
def decode(self,filter): def decode(self,filt):
try: try:
filter.write(self.get_payload(decode=True)) filt.write(self.get_payload(decode=True))
except: except:
pass pass
return self.getencoding() return self.getencoding()
@@ -363,7 +239,7 @@ class MimeMessage(Message):
def __setitem__(self, name, value): def __setitem__(self, name, value):
rc = Message.__setitem__(self,name,value) rc = Message.__setitem__(self,name,value)
self.modified = True self.modified = True
if self.headerchange: self.headerchange(self,name,value) if self.headerchange: self.headerchange(self,name,str(value))
return rc return rc
def __delitem__(self, name): def __delitem__(self, name):
@@ -374,7 +250,7 @@ class MimeMessage(Message):
def get_payload(self,i=None,decode=False): def get_payload(self,i=None,decode=False):
msg = self.submsg msg = self.submsg
if msg and msg.ismodified(): if isinstance(msg,Message) and msg.ismodified():
self.set_payload([msg]) self.set_payload([msg])
return Message.get_payload(self,i,decode) return Message.get_payload(self,i,decode)
@@ -388,18 +264,27 @@ class MimeMessage(Message):
self.submsg = None self.submsg = None
def get_submsg(self): def get_submsg(self):
if self.get_content_type().lower() == 'message/rfc822': t = self.get_content_type().lower()
if t == 'message/rfc822' or t.startswith('multipart/'):
if not self.submsg: if not self.submsg:
txt = self.get_payload() txt = self.get_payload()
if type(txt) == str: if type(txt) == str:
txt = self.get_payload(decode=True) txt = self.get_payload(decode=True)
parser = MimeParser(MimeMessage) self.submsg = email.message_from_string(txt,MimeMessage)
self.submsg = parser.parsestr(txt) for part in self.submsg.walk():
part.modified = False
else: else:
self.submsg = txt[0] self.submsg = txt[0]
return self.submsg return self.submsg
return None return None
def message_from_file(fp):
msg = email.message_from_file(fp,MimeMessage)
for part in msg.walk():
part.modified = False
assert not msg.ismodified()
return msg
extlist = ''.join(""" extlist = ''.join("""
ade,adp,asd,asx,asp,bas,bat,chm,cmd,com,cpl,crt,dll,exe,hlp,hta,inf,ins,isp,js, ade,adp,asd,asx,asp,bas,bat,chm,cmd,com,cpl,crt,dll,exe,hlp,hta,inf,ins,isp,js,
jse,lnk,mdb,mde,msc,msi,msp,mst,ocx,pcd,pif,reg,scr,sct,shs,url,vb,vbe,vbs,wsc, jse,lnk,mdb,mde,msc,msi,msp,mst,ocx,pcd,pif,reg,scr,sct,shs,url,vb,vbe,vbs,wsc,
@@ -421,19 +306,27 @@ A copy of your original message was saved as '%s:%s'.
See your administrator. See your administrator.
""" """
def check_name(msg,savname=None,ckname=check_ext): def check_name(msg,savname=None,ckname=check_ext,scan_zip=False):
"Replace attachment with a warning if its name is suspicious." "Replace attachment with a warning if its name is suspicious."
for (key,name) in msg.getnames(): try:
badname = ckname(name) for key,name in msg.getnames(scan_zip):
if badname: badname = ckname(name)
hostname = socket.gethostname() if badname:
msg.set_payload(virus_msg % (badname,hostname,savname)) if key == 'zipname':
del msg["content-type"] badname = msg.get_filename()
del msg["content-disposition"] break
del msg["content-transfer-encoding"] else:
name = "WARNING.TXT" return Milter.CONTINUE
msg["Content-Type"] = "text/plain; name="+name except zipfile.BadZipfile:
break # a ZIP that is not a zip is very suspicious
badname = msg.get_filename()
hostname = socket.gethostname()
msg.set_payload(virus_msg % (badname,hostname,savname))
del msg["content-type"]
del msg["content-disposition"]
del msg["content-transfer-encoding"]
name = "WARNING.TXT"
msg["Content-Type"] = "text/plain; name="+name
return Milter.CONTINUE return Milter.CONTINUE
import email.Iterators import email.Iterators
@@ -444,7 +337,7 @@ msg MimeMessage
check function(MimeMessage): int check function(MimeMessage): int
Return CONTINUE, REJECT, ACCEPT Return CONTINUE, REJECT, ACCEPT
""" """
if msg.ismultipart() and not msg.get_content_type() == 'message/rfc822': if msg.is_multipart():
for i in msg.get_payload(): for i in msg.get_payload():
rc = check_attachments(i,check) rc = check_attachments(i,check)
if rc != Milter.CONTINUE: return rc if rc != Milter.CONTINUE: return rc
@@ -453,28 +346,35 @@ check function(MimeMessage): int
# save call context for Python without nested_scopes # save call context for Python without nested_scopes
class _defang: class _defang:
def __init__(self,savname,check):
self._savname = savname def __init__(self,scan_html=True):
self._check = check self.scan_html = scan_html
self.scan_rfc822 = True
self.scan_html = True
def _chk_name(self,msg): def _chk_name(self,msg):
rc = check_name(msg,self._savname,self._check) rc = check_name(msg,self._savname,self._check,self.scan_zip)
if self.scan_html: if self.scan_html:
check_html(msg,self._savname) # remove scripts from HTML check_html(msg,self._savname) # remove scripts from HTML
if self.scan_rfc822: if self.scan_rfc822:
msg = msg.get_submsg() msg = msg.get_submsg()
if msg: return check_attachments(msg,self._chk_name) if isinstance(msg,Message):
return check_attachments(msg,self._chk_name)
return rc return rc
def __call__(self,msg,savname=None,check=check_ext,scan_rfc822=True,
scan_zip=False):
"""Compatible entry point.
Replace all attachments with dangerous names."""
self._savname = savname
self._check = check
self.scan_rfc822 = scan_rfc822
self.scan_zip = scan_zip
check_attachments(msg,self._chk_name)
if msg.ismodified():
return True
return False
# emulate old defang function # emulate old defang function
def defang(msg,savname=None,check=check_ext): defang = _defang()
"""Compatible entry point.
Replace all attachments with dangerous names."""
check_attachments(msg,_defang(savname,check)._chk_name)
if msg.ismodified():
return 1;
return 0
import sgmllib import sgmllib
@@ -571,7 +471,6 @@ class HTMLScriptFilter(SGMLFilter):
def handle_comment(self,comment): def handle_comment(self,comment):
if not self.ignoring: SGMLFilter.handle_comment(self,comment) if not self.ignoring: SGMLFilter.handle_comment(self,comment)
def check_html(msg,savname=None): def check_html(msg,savname=None):
"Remove scripts from HTML attachments." "Remove scripts from HTML attachments."
msgtype = msg.get_content_type().lower() msgtype = msg.get_content_type().lower()
@@ -582,14 +481,14 @@ def check_html(msg,savname=None):
msgtype = 'text/html' msgtype = 'text/html'
if msgtype == 'text/html': if msgtype == 'text/html':
out = StringIO.StringIO() out = StringIO.StringIO()
filter = HTMLScriptFilter(out) htmlfilter = HTMLScriptFilter(out)
try: try:
filter.write(msg.get_payload(decode=True)) htmlfilter.write(msg.get_payload(decode=True))
filter.close() htmlfilter.close()
#except sgmllib.SGMLParseError: #except sgmllib.SGMLParseError:
except: except:
#mimetools.copyliteral(msg.get_payload(),open('debug.out','w') #mimetools.copyliteral(msg.get_payload(),open('debug.out','w')
filter.close() htmlfilter.close()
hostname = socket.gethostname() hostname = socket.gethostname()
msg.set_payload( msg.set_payload(
"An HTML attachment could not be parsed. The original is saved as '%s:%s'" "An HTML attachment could not be parsed. The original is saved as '%s:%s'"
@@ -600,8 +499,25 @@ def check_html(msg,savname=None):
name = "WARNING.TXT" name = "WARNING.TXT"
msg["Content-Type"] = "text/plain; name="+name msg["Content-Type"] = "text/plain; name="+name
return Milter.CONTINUE return Milter.CONTINUE
if filter.modified: if htmlfilter.modified:
msg.set_payload(out) # remove embedded scripts msg.set_payload(out) # remove embedded scripts
del msg["content-transfer-encoding"] del msg["content-transfer-encoding"]
email.Encoders.encode_quopri(msg) email.Encoders.encode_quopri(msg)
return Milter.CONTINUE return Milter.CONTINUE
if __name__ == '__main__':
import sys
def _list_attach(msg):
t = msg.get_content_type()
p = msg.get_payload(decode=True)
print msg.get_filename(),msg.get_content_type(),type(p)
msg = msg.get_submsg()
if isinstance(msg,Message):
return check_attachments(msg,_list_attach)
return Milter.CONTINUE
for fname in sys.argv[1:]:
fp = open(fname)
msg = message_from_file(fp)
email.Iterators._structure(msg)
check_attachments(msg,_list_attach)
+38
View File
@@ -0,0 +1,38 @@
# Analyze milter log to find abusers
fp = open('/var/log/milter/milter.log','r')
subdict = {}
ipdict = {}
spamcnt = {}
for line in fp:
a = line.split(None,4)
if len(a) < 4: continue
dt,tm,id,op = a[:4]
if op == 'Subject:':
if len(a) > 4: subdict[id] = a[4].rstrip()
elif op == 'connect':
ipdict[id] = a[4].rstrip()
elif op in ('eom','dspam'):
if id in subdict: del subdict[id]
if id in ipdict: del ipdict[id]
elif op in ('REJECT:','DSPAM:','SPAM:','abort'):
if id in subdict:
if id in ipdict:
ip = ipdict[id]
del ipdict[id]
f,host,raw = ip.split(None,2)
if host in spamcnt:
spamcnt[host] += 1
else:
spamcnt[host] = 1
else: ip = ''
print dt,tm,op,a[4].rstrip(),subdict[id]
del subdict[id]
else:
print line.rstrip()
print len(subdict),'leftover entries'
spamlist = filter(lambda x: x[1] > 1,spamcnt.items())
spamlist.sort(lambda x,y: x[1] - y[1])
for ip,cnt in spamlist:
print cnt,ip
+44
View File
@@ -0,0 +1,44 @@
divert(-1)
#
# Copyright (c) 2002 Derek J. Balling
# All rights reserved.
#
# Permission to use granted for all purposes. If modifications are made
# they are requested to be sent to <dredd@megacity.org> for inclusion in future
# versions
#
# Allows (hopefully) for checking of access.db whitelisting now. This ONLY
# works on sendmail-8.12.x ... use on any other version may require tinkering
# by you the downloader.
#
# Incorporates many changes by Sergey S. Mokryshev <mokr@mokr.net>
#
#
divert(0)
ifdef(`_RHSBL_R_',`dnl',`dnl
VERSIONID(`$Id$')
define(`_RHSBL_R_',`')
ifdef(`_DNSBL_R_',`dnl',`dnl
LOCAL_CONFIG
# map for DNS based blacklist lookups based on the sender RHS
Kdnsbl host -T<TMP>')')
divert(-1)
define(`_RHSBL_SRV_', `_ARG_')dnl
define(`_RHSBL_MSG_', `ifelse(len(X`'_ARG2_),`1',`"550 Mail from " $`'&{RHS} " refused by blackhole site '_RHSBL_SRV_`"',`_ARG2_')')dnl
define(`_RHSBL_MSG_TMP_', `ifelse(_ARG3_,`t',`"451 Temporary lookup failure of " $`'&{RHS} " at '_RHSBL_SRV_`"',`_ARG3_')')dnl
MAILER_DEFINITIONS
SLocal_check_mail
# DNS based RHS spam list blackholes.bmsi.com
R$* $: <?> $>CanonAddr $1
R<?> $*<@$+.> $: <?> $1<@$2.> $| $>SearchList <+ rhs> $| <F:$1@$2> <D:$2> <>
R<?> $* $| <$={Accept}> $: OKSOFAR
R<?> $*<@$+.> $| $* $: <?> $(dnsbl $2._RHSBL_SRV_. $: OK $) $(macro {RHS} $@ $2 $)
R<?> OK $: OKSOFAR
R<?> $*<@$*> $: OKSOFAR
ifelse(len(X`'_ARG3_),`1',
`R<?>$+<TMP> $: TMPOK',
`R<?>$+<TMP> $#error $@ 4.7.1 $: _RHSBL_MSG_TMP_')
R<?>$+ $#error $@ 5.7.1 $: _RHSBL_MSG_
+1 -1
View File
@@ -126,7 +126,7 @@ class sampleMilter(Milter.Milter):
def eom(self): def eom(self):
if not self.fp: return Milter.ACCEPT if not self.fp: return Milter.ACCEPT
self.fp.seek(0) self.fp.seek(0)
msg = mime.MimeMessage(self.fp) msg = mime.message_from_file(self.fp)
msg.headerchange = self._headerChange msg.headerchange = self._headerChange
if not mime.defang(msg,self.tempname): if not mime.defang(msg,self.tempname):
os.remove(self.tempname) os.remove(self.tempname)
+1
View File
@@ -2,3 +2,4 @@
python=python2 python=python2
doc_files=README NEWS TODO doc_files=README NEWS TODO
packager=Stuart D. Gathman <stuart@bmsi.com> packager=Stuart D. Gathman <stuart@bmsi.com>
release=2.4
+9 -4
View File
@@ -12,7 +12,7 @@ if sys.version < '2.2.3':
DistributionMetadata.classifiers = None DistributionMetadata.classifiers = None
DistributionMetadata.download_url = None DistributionMetadata.download_url = None
setup(name = "milter", version = "0.6.9", setup(name = "milter", version = "0.8.2",
description="Python interface to sendmail milter API", description="Python interface to sendmail milter API",
long_description="""\ long_description="""\
This is a python extension module to enable python scripts to This is a python extension module to enable python scripts to
@@ -26,9 +26,13 @@ querying SPF records.
maintainer_email="stuart@bmsi.com", maintainer_email="stuart@bmsi.com",
license="GPL", license="GPL",
url="http://www.bmsi.com/python/milter.html", url="http://www.bmsi.com/python/milter.html",
py_modules=["Milter","mime","spf"], py_modules=["mime","spf"],
packages = ['Milter'],
ext_modules=[ ext_modules=[
Extension("milter", ["miltermodule.c"],libraries=libs), Extension("milter", ["miltermodule.c"],
libraries=libs,
define_macros = [ ('MAX_ML_REPLY',32) ]
),
], ],
keywords = ['sendmail','milter'], keywords = ['sendmail','milter'],
classifiers = [ classifiers = [
@@ -39,6 +43,7 @@ querying SPF records.
'Natural Language :: English', 'Natural Language :: English',
'Operating System :: POSIX', 'Operating System :: POSIX',
'Programming Language :: Python', 'Programming Language :: Python',
'Topic :: Communications :: Email :: Mail Transport Agents' 'Topic :: Communications :: Email :: Mail Transport Agents',
'Topic :: Communications :: Email :: Filters'
] ]
) )
+23
View File
@@ -0,0 +1,23 @@
Subject: SPF softfail (POSSIBLE FORGERY)
This is an automatically generated Delivery Status Notification.
THIS IS A WARNING MESSAGE ONLY.
YOU DO *NOT* NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipients has been delayed.
%(rcpt)s
Subject: %(subject)s
Received-SPF: %(spf_result)s
Your sender policy indicated that the above email was likely forged and that
feedback was desired.
If you need further assistance, please do not hesitate to contact me.
Kind regards,
postmaster@%(receiver)s
+490 -132
View File
@@ -1,7 +1,8 @@
#!/usr/bin/env python #!/usr/bin/env python
"""SPF (Sender-Permitted From) implementation. """SPF (Sender Policy Framework) implementation.
Copyright (c) 2003, Terence Way Copyright (c) 2003, Terence Way
Portions Copyright (c) 2004,2005 Stuart Gathman <stuart@bmsi.com>
This module is free software, and you may redistribute it and/or modify This module is free software, and you may redistribute it and/or modify
it under the same terms as Python itself, so long as this copyright message it under the same terms as Python itself, so long as this copyright message
and disclaimer are retained in their original form. and disclaimer are retained in their original form.
@@ -18,10 +19,11 @@ AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
For more information about SPF, a tool against email forgery, see For more information about SPF, a tool against email forgery, see
http://spf.pobox.com http://spf.pobox.com/
For news, bugfixes, etc. visit the home page for this implementation at For news, bugfixes, etc. visit the home page for this implementation at
http://www.wayforward.net/spf/ http://www.wayforward.net/spf/
http://sourceforge.net/projects/pymilter/
""" """
# Changes: # Changes:
@@ -45,6 +47,154 @@ For news, bugfixes, etc. visit the home page for this implementation at
# Terrence is not responding to email. # Terrence is not responding to email.
# #
# $Log$ # $Log$
# Revision 1.26 2005/07/20 03:12:40 customdesigned
# When not in strict mode, don't give PermErr for bad mechanism until
# encountered during evaluation.
#
# Revision 1.25 2005/07/19 23:24:42 customdesigned
# Validate all mechanisms before evaluating.
#
# Revision 1.24 2005/07/19 18:11:52 kitterma
# Fix to change that compares type TXT and type SPF records. Bug in the change
# prevented records from being returned if it was published as TXT, but not SPF.
#
# Revision 1.23 2005/07/19 15:22:50 customdesigned
# MX and PTR limits are MUST NOT check limits, and do not result in PermErr.
# Also, check belongs in mx and ptr specific methods, not in dns() method.
#
# Revision 1.22 2005/07/19 05:02:29 customdesigned
# FQDN test was broken. Added test case. Move FQDN test to after
# macro expansion.
#
# Revision 1.21 2005/07/18 20:46:27 kitterma
# Fixed reference problem in 1.20
#
# Revision 1.20 2005/07/18 20:21:47 kitterma
# Change to dns_spf to go ahead and check for a type 99 (SPF) record even if a
# TXT record is found and make sure if type SPF is present that they are
# identical when using strict processing.
#
# Revision 1.19 2005/07/18 19:36:00 kitterma
# Change to require at least one dot in a domain name. Added PermError
# description to indicate FQDN should be used. This is a common error.
#
# Revision 1.18 2005/07/18 17:13:37 kitterma
# Change macro processing to raise PermError on an unknown macro.
# schlitt-spf-classic-02 para 8.1. Change exp modifier processing to ignore
# exp strings with syntax errors. schlitt-spf-classic-02 para 6.2.
#
# Revision 1.17 2005/07/18 14:35:34 customdesigned
# Remove debugging printf
#
# Revision 1.16 2005/07/18 14:34:14 customdesigned
# Forgot to remove debugging print
#
# Revision 1.15 2005/07/15 21:17:36 customdesigned
# Recursion limit raises AssertionError in strict mode, PermError otherwise.
#
# Revision 1.14 2005/07/15 20:34:11 customdesigned
# Check whether DNS package already supports SPF before patching
#
# Revision 1.13 2005/07/15 20:01:22 customdesigned
# Allow extended results for MX limit
#
# Revision 1.12 2005/07/15 19:12:09 customdesigned
# Official IANA SPF record (type 99) support.
#
# Revision 1.11 2005/07/15 18:03:02 customdesigned
# Fix unknown Received-SPF header broken by result changes
#
# Revision 1.10 2005/07/15 16:17:05 customdesigned
# Start type99 support.
# Make Scott's "/" support in parse_mechanism more elegant as requested.
# Add test case for "/" support.
#
# Revision 1.9 2005/07/15 03:33:14 kitterma
# Fix for bug 1238403 - Crash if non-CIDR / present. Also added
# validation check for valid IPv4 CIDR range.
#
# Revision 1.8 2005/07/14 04:18:01 customdesigned
# Bring explanations and Received-SPF header into line with
# the unknown=PermErr and error=TempErr convention.
# Hope my case-sensitive mech fix doesn't clash with Scotts.
#
# Revision 1.7 2005/07/12 21:43:56 kitterma
# Added processing to clarify some cases of unknown
# qualifier errors (to distinguish between unknown qualifier and
# unknown mechanism).
# Also cleaned up comments from previous updates.
#
# Revision 1.6 2005/06/29 14:46:26 customdesigned
# Distinguish trivial recursion from missing arg for diagnostic purposes.
#
# Revision 1.5 2005/06/28 17:48:56 customdesigned
# Support extended processing results when a PermError should strictly occur.
#
# Revision 1.4 2005/06/22 15:54:54 customdesigned
# Correct spelling.
#
# Revision 1.3 2005/06/22 00:08:24 kitterma
# Changes from draft-mengwong overall DNS lookup and recursion
# depth limits to draft-schlitt-spf-classic-02 DNS lookup, MX lookup, and
# PTR lookup limits. Recursion code is still present and functioning, but
# it should be impossible to trip it.
#
# Revision 1.2 2005/06/21 16:46:09 kitterma
# Updated definition of SPF, added reference to the sourceforge project site,
# and deleted obsolete Microsoft Caller ID for Email XML translation routine.
#
# Revision 1.1.1.1 2005/06/20 19:57:32 customdesigned
# Move Python SPF to its own module.
#
# Revision 1.5 2005/06/14 20:31:26 customdesigned
# fix pychecker nits
#
# Revision 1.4 2005/06/02 04:18:55 customdesigned
# Update copyright notices after reading article on /.
#
# Revision 1.3 2005/06/02 02:08:12 customdesigned
# Reject on PermErr
#
# Revision 1.2 2005/05/31 18:57:59 customdesigned
# Clear unknown mechanism list at proper time.
#
# Revision 1.24 2005/03/16 21:58:39 stuart
# Change Milter module to package.
#
# Revision 1.22 2005/02/09 17:52:59 stuart
# Report DNS errors as PermError rather than unknown.
#
# Revision 1.21 2004/11/20 16:37:03 stuart
# Handle multi-segment TXT records.
#
# Revision 1.20 2004/11/19 06:10:30 stuart
# Use PermError exception instead of reporting unknown.
#
# Revision 1.19 2004/11/09 23:00:18 stuart
# Limit recursion and DNS lookups separately.
#
#
# Revision 1.17 2004/09/10 18:08:26 stuart
# Return unknown for null mechanism
#
# Revision 1.16 2004/09/04 23:27:06 stuart
# More mechanism aliases.
#
# Revision 1.15 2004/08/30 21:19:05 stuart
# Return unknown for invalid ip syntax in mechanism
#
# Revision 1.14 2004/08/23 02:28:24 stuart
# Remove Perl usage message.
#
# Revision 1.13 2004/07/23 19:23:12 stuart
# Always fail to match on ip6, until we support it properly.
#
# Revision 1.12 2004/07/23 18:48:15 stuart
# Fold CID parsing into spf
#
# Revision 1.11 2004/07/21 21:32:01 stuart
# Handle CID records (Microsoft XML format).
#
# Revision 1.10 2004/04/19 22:12:11 stuart # Revision 1.10 2004/04/19 22:12:11 stuart
# Release 0.6.9 # Release 0.6.9
# #
@@ -97,6 +247,11 @@ import struct # for pack() and unpack()
import time # for time() import time # for time()
import DNS # http://pydns.sourceforge.net import DNS # http://pydns.sourceforge.net
if not hasattr(DNS.Type,'SPF'):
# patch in type99 support
DNS.Type.SPF = 99
DNS.Type.typemap[99] = 'SPF'
DNS.Lib.RRunpacker.getSPFdata = DNS.Lib.RRunpacker.getTXTdata
# 32-bit IPv4 address mask # 32-bit IPv4 address mask
MASK = 0xFFFFFFFFL MASK = 0xFFFFFFFFL
@@ -110,6 +265,8 @@ RE_CHAR = re.compile(r'%(%|_|-|(\{[a-zA-Z][0-9]*r?[^\}]*\}))')
# Regular expression to break up a macro expansion # Regular expression to break up a macro expansion
RE_ARGS = re.compile(r'([0-9]*)(r?)([^0-9a-zA-Z]*)') RE_ARGS = re.compile(r'([0-9]*)(r?)([^0-9a-zA-Z]*)')
RE_CIDR = re.compile(r'/([1-9]|1[0-9]*|2[0-9]*|3[0-2]*)$')
# Local parts and senders have their delimiters replaced with '.' during # Local parts and senders have their delimiters replaced with '.' during
# macro expansion # macro expansion
# #
@@ -117,11 +274,12 @@ JOINERS = {'l': '.', 's': '.'}
RESULTS = {'+': 'pass', '-': 'fail', '?': 'neutral', '~': 'softfail', RESULTS = {'+': 'pass', '-': 'fail', '?': 'neutral', '~': 'softfail',
'pass': 'pass', 'fail': 'fail', 'unknown': 'unknown', 'pass': 'pass', 'fail': 'fail', 'unknown': 'unknown',
'neutral': 'neutral', 'softfail': 'softfail', 'error': 'error', 'neutral': 'neutral', 'softfail': 'softfail',
'none': 'none', 'deny': 'fail' } 'none': 'none', 'deny': 'fail' }
EXPLANATIONS = {'pass': 'sender SPF verified', 'fail': 'access denied', EXPLANATIONS = {'pass': 'sender SPF verified', 'fail': 'access denied',
'unknown': 'SPF unknown', 'unknown': 'permanent error in processing',
'error': 'temporary error in processing',
'softfail': 'domain in transition', 'softfail': 'domain in transition',
'neutral': 'access neither permitted nor denied', 'neutral': 'access neither permitted nor denied',
'none': '' 'none': ''
@@ -140,10 +298,33 @@ except NameError:
def bool(x): return not not x def bool(x): return not not x
# ...pre 2.2.1 # ...pre 2.2.1
# standard default SPF record # standard default SPF record for best_guess
DEFAULT_SPF = 'v=spf1 a/24 mx/24 ptr' DEFAULT_SPF = 'v=spf1 a/24 mx/24 ptr'
def check(i, s, h,local=None): # maximum DNS lookups allowed
MAX_LOOKUP = 10 #draft-schlitt-spf-classic-02 Para 10.1
MAX_MX = 10 #draft-schlitt-spf-classic-02 Para 10.1
MAX_PTR = 10 #draft-schlitt-spf-classic-02 Para 10.1
MAX_RECURSION = 20
ALL_MECHANISMS = ('a', 'mx', 'ptr', 'exists', 'include', 'ip4', 'ip6', 'all')
COMMON_MISTAKES = { 'prt': 'ptr', 'ip': 'ip4', 'ipv4': 'ip4', 'ipv6': 'ip6' }
class TempError(Exception):
"Temporary SPF error"
class PermError(Exception):
"Permanent SPF error"
def __init__(self,msg,mech=None,ext=None):
Exception.__init__(self,msg,mech)
self.msg = msg
self.mech = mech
self.ext = ext
def __str__(self):
if self.mech:
return '%s: %s'%(self.msg,self.mech)
return self.msg
def check(i, s, h,local=None,receiver=None):
"""Test an incoming MAIL FROM:<s>, from a client with ip address i. """Test an incoming MAIL FROM:<s>, from a client with ip address i.
h is the HELO/EHLO domain name. h is the HELO/EHLO domain name.
@@ -157,7 +338,7 @@ def check(i, s, h,local=None):
#>>> check(i='61.51.192.42', s='liukebing@bcc.com', h='bmsi.com') #>>> check(i='61.51.192.42', s='liukebing@bcc.com', h='bmsi.com')
""" """
return query(i=i, s=s, h=h,local=local).check() return query(i=i, s=s, h=h,local=local,receiver=receiver).check()
class query(object): class query(object):
"""A query object keeps the relevant information about a single SPF """A query object keeps the relevant information about a single SPF
@@ -178,16 +359,23 @@ class query(object):
Also keeps cache: DNS cache. Also keeps cache: DNS cache.
""" """
def __init__(self, i, s, h,local=None): def __init__(self, i, s, h,local=None,receiver=None,strict=True):
self.i, self.s, self.h = i, s, h self.i, self.s, self.h = i, s, h
if not s and h:
self.s = 'postmaster@' + h
self.l, self.o = split_email(s, h) self.l, self.o = split_email(s, h)
self.t = str(int(time.time())) self.t = str(int(time.time()))
self.v = 'in-addr' self.v = 'in-addr'
self.d = self.o self.d = self.o
self.p = None self.p = None
if receiver:
self.r = receiver
self.cache = {} self.cache = {}
self.exps = dict(EXPLANATIONS) self.exps = dict(EXPLANATIONS)
self.local = local # local policy self.local = local # local policy
self.lookups = 0
# strict can be False, True, or 2 for harsh
self.strict = strict
def set_default_explanation(self,exp): def set_default_explanation(self,exp):
exps = self.exps exps = self.exps
@@ -209,34 +397,154 @@ class query(object):
def check(self, spf=None): def check(self, spf=None):
""" """
Returns (result, mta-status-code, explanation) where Returns (result, mta-status-code, explanation) where result
result in ['fail', 'softfail', 'neutral' 'unknown', 'pass', 'error'] in ['fail', 'softfail', 'neutral' 'unknown', 'pass', 'error', 'none']
Examples:
>>> q = query(s='strong-bad@email.example.com',
... h='mx.example.org', i='192.0.2.3')
>>> q.check(spf='v=spf1 ?all')
('neutral', 250, 'access neither permitted nor denied')
>>> q.check(spf='v=spf1 ip4:192.0.0.0/8 ?all moo')
('unknown', 550, 'SPF Permanent Error: Unknown mechanism found: moo')
>>> q.check(spf='v=spf1 ip4:192.0.0.0/8 ~all')
('pass', 250, 'sender SPF verified')
>>> q.strict = False
>>> q.check(spf='v=spf1 ip4:192.0.0.0/8 -all moo')
('pass', 250, 'sender SPF verified')
>>> q.check(spf='v=spf1 ip4:192.1.0.0/16 moo -all')
('unknown', 550, 'SPF Permanent Error: Unknown mechanism found: moo')
>>> q.check(spf='v=spf1 ip4:192.1.0.0/16 ~all')
('softfail', 250, 'domain in transition')
>>> q.check(spf='v=spf1 -ip4:192.1.0.0/6 ~all')
('fail', 550, 'access denied')
# Assumes DNS available
>>> q.check()
('none', 250, '')
""" """
self.mech = [] # unknown mechanisms
# If not strict, certain PermErrors (mispelled
# mechanisms, strict processing limits exceeded)
# will continue processing. However, the exception
# that strict processing would raise is saved here
self.perm_error = None
if self.i.startswith('127.'): if self.i.startswith('127.'):
return ('pass', 250, 'local connections always pass') return ('pass', 250, 'local connections always pass')
try: try:
self.lookups = 0
if not spf: if not spf:
spf = self.dns_spf(self.d) spf = self.dns_spf(self.d)
if self.local and spf: if self.local and spf:
spf += ' ' + self.local spf += ' ' + self.local
return self.check1(spf, self.d, 0) rc = self.check1(spf, self.d, 0)
except DNS.DNSError: if self.perm_error:
return ('error', 450, 'SPF DNS Error') # extended processing succeeded, but strict failed
self.perm_error.ext = rc
raise self.perm_error
return rc
except DNS.DNSError,x:
return ('error', 450, 'SPF DNS Error: ' + str(x))
except TempError,x:
return ('error', 450, 'SPF Temporary Error: ' + str(x))
except PermError,x:
self.prob = x.msg
if x.mech:
self.mech.append(x.mech)
# Pre-Lentczner draft treats this as an unknown result
# and equivalent to no SPF record.
return ('unknown', 550, 'SPF Permanent Error: ' + str(x))
def check1(self, spf, domain, recursion): def check1(self, spf, domain, recursion):
# spf rfc: 3.7 Processing Limits # spf rfc: 3.7 Processing Limits
# #
if recursion > 20: if recursion > MAX_RECURSION:
self.prob = 'Mechanisms used too many DNS lookups' # This should never happen in strict mode
return ('unknown', 250, 'SPF recursion limit exceeded') # because of the other limits we check,
# so if it does, there is something wrong with
# our code. It is not a PermError because there is not
# necessarily anything wrong with the SPF record.
if self.strict:
raise AssertionError('Too many levels of recursion')
# As an extended result, however, it should be
# a PermError.
raise PermError('Too many levels of recursion')
try: try:
tmp, self.d = self.d, domain tmp, self.d = self.d, domain
return self.check0(spf, recursion) return self.check0(spf,recursion)
finally: finally:
self.d = tmp self.d = tmp
def check0(self, spf, recursion): def validate_mechanism(self,mech):
"""Parse and validate a mechanism.
Returns mech,m,arg,cidrlength,result
Examples:
>>> q = query(s='strong-bad@email.example.com',
... h='mx.example.org', i='192.0.2.3')
>>> q.validate_mechanism('A')
('A', 'a', 'email.example.com', 32, 'pass')
>>> q.validate_mechanism('?mx:%{d}/27')
('?mx:%{d}/27', 'mx', 'email.example.com', 27, 'neutral')
>>> q.validate_mechanism('-mx::%%%_/.Clara.de/27')
('-mx::%%%_/.Clara.de/27', 'mx', ':% /.Clara.de', 27, 'fail')
>>> q.validate_mechanism('~exists:%{i}.%{s1}.100/86400.rate.%{d}')
('~exists:%{i}.%{s1}.100/86400.rate.%{d}', 'exists', '192.0.2.3.com.100/86400.rate.email.example.com', 32, 'softfail')
"""
# a mechanism
m, arg, cidrlength = parse_mechanism(mech, self.d)
# map '?' '+' or '-' to 'unknown' 'pass' or 'fail'
if m:
result = RESULTS.get(m[0])
if result:
# eat '?' '+' or '-'
m = m[1:]
else:
# default pass
result = 'pass'
if m in COMMON_MISTAKES:
try:
raise PermError('Unknown mechanism found',mech)
except PermError, x:
if self.strict: raise
m = COMMON_MISTAKES[m]
if not self.perm_error:
self.perm_error = x
if m in ('a', 'mx', 'ptr', 'exists', 'include'):
arg = self.expand(arg)
if not (0 < arg.find('.') < len(arg) - 1):
raise PermError('Invalid domain found (use FQDN)',
arg)
if m == 'include':
if arg == self.d:
if mech != 'include':
raise PermError('include has trivial recursion',mech)
raise PermError('include mechanism missing domain',mech)
return mech,m,arg,cidrlength,result
if m in ALL_MECHANISMS:
return mech,m,arg,cidrlength,result
try:
if m[1:] in ALL_MECHANISMS:
raise PermError(
'Unknown qualifier, IETF draft para 4.6.1, found in',
mech)
raise PermError('Unknown mechanism found',mech)
except PermError, x:
if self.strict: raise
return mech,m,arg,cidrlength,x
def check0(self, spf,recursion):
"""Test this query information against SPF text. """Test this query information against SPF text.
Returns (result, mta-status-code, explanation) where Returns (result, mta-status-code, explanation) where
@@ -258,106 +566,106 @@ class query(object):
# overridden with 'default=' modifier # overridden with 'default=' modifier
# #
default = 'neutral' default = 'neutral'
self.mech = [] # unknown mechanisms mechs = []
# Look for modifiers # Look for modifiers
# #
for m in spf:
m = RE_MODIFIER.split(m)[1:]
if len(m) != 2: continue
if m[0] == 'exp':
exps['fail'] = exps['unknown'] = \
self.get_explanation(m[1])
elif m[0] == 'redirect':
redirect = self.expand(m[1])
elif m[0] == 'default':
# default=- is the same as default=fail
default = RESULTS.get(m[1], default)
# spf rfc: 3.6 Unrecognized Mechanisms and Modifiers
# Look for mechanisms
#
for mech in spf: for mech in spf:
if RE_MODIFIER.match(mech): continue m = RE_MODIFIER.split(mech)[1:]
m, arg, cidrlength = parse_mechanism(mech, self.d) if len(m) != 2:
mechs.append(self.validate_mechanism(mech))
continue
# map '?' '+' or '-' to 'unknown' 'pass' or 'fail' if m[0] == 'exp':
result = RESULTS.get(m[0]) try:
if result: self.set_default_explanation(self.get_explanation(m[1]))
# eat '?' '+' or '-' except PermError:
m = m[1:] pass
else: elif m[0] == 'redirect':
# default pass self.check_lookups()
result = 'pass' redirect = self.expand(m[1])
elif m[0] == 'default':
# default=- is the same as default=fail
default = RESULTS.get(m[1], default)
if m in ['a', 'mx', 'ptr', 'exists', 'include']: # spf rfc: 3.6 Unrecognized Mechanisms and Modifiers
arg = self.expand(arg)
if m == 'include': # Evaluate mechanisms
if arg != self.d: #
res,code,txt = self.check1(self.dns_spf(arg), for mech,m,arg,cidrlength,result in mechs:
arg, recursion + 1)
if res == 'pass':
break
if res in ('fail','neutral','softfail'):
continue
if res == 'none':
self.prob = \
'Could not find a valid SPF record'
res = 'unknown'
return res,code,txt
else:
self.prob = 'Required option is missing'
self.mech.append(mech)
return ('unknown', 250, 'missing SPF option')
elif m == 'all': if m == 'include':
self.check_lookups()
res,code,txt = self.check1(self.dns_spf(arg),
arg, recursion + 1)
if res == 'pass':
break
if res == 'none':
raise PermError(
'No valid SPF record for included domain: %s'%arg,
mech)
continue
elif m == 'all':
break
elif m == 'exists':
self.check_lookups()
if len(self.dns_a(arg)) > 0:
break break
elif m == 'exists': elif m == 'a':
if len(self.dns_a(arg)) > 0: self.check_lookups()
break if cidrmatch(self.i, self.dns_a(arg), cidrlength):
break
elif m == 'a': elif m == 'mx':
if cidrmatch(self.i, self.dns_a(arg), self.check_lookups()
cidrlength): if cidrmatch(self.i, self.dns_mx(arg), cidrlength):
break break
elif m == 'mx': elif m == 'ip4' and arg != self.d:
if cidrmatch(self.i, self.dns_mx(arg), try:
cidrlength): if cidrmatch(self.i, [arg], cidrlength):
break break
except socket.error:
raise PermError('syntax error',mech)
elif m in ('ip4', 'ipv4') and arg != self.d: elif m == 'ip6':
if cidrmatch(self.i, [arg], cidrlength): # Until we support IPV6, we should never
break # get an IPv6 connection. So this mech
# will never match.
pass
elif m in ('ptr', 'prt'): elif m == 'ptr':
if domainmatch(self.validated_ptrs(self.i), self.check_lookups()
arg): if domainmatch(self.validated_ptrs(self.i), arg):
break break
else:
# unknown mechanisms cause immediate unknown
# abort results
self.mech.append(mech)
self.prob = 'Unknown mechanism found'
return ('unknown',250,'unknown SPF mechanism')
else:
raise result
else: else:
# no matches # no matches
if redirect: if redirect:
return self.check1(self.dns_spf(redirect), return self.check1(self.dns_spf(redirect),
redirect, recursion+1) redirect, recursion + 1)
else: else:
result = default result = default
if result == 'fail': if result == 'fail':
return (result, 550, exps[result]) return (result, 550, exps[result])
else: else:
return (result, 250, exps[result]) return (result, 250, exps[result])
def check_lookups(self):
self.lookups = self.lookups + 1
if self.lookups > MAX_LOOKUP:
try:
if self.strict or not self.perm_error:
raise PermError('Too many DNS lookups')
except PermError,x:
if self.strict or self.lookups > MAX_LOOKUP*4:
raise x
self.perm_error = x
def get_explanation(self, spec): def get_explanation(self, spec):
"""Expand an explanation.""" """Expand an explanation."""
@@ -450,8 +758,10 @@ class query(object):
letter = macro[2].lower() letter = macro[2].lower()
if letter == 'p': if letter == 'p':
self.getp() self.getp()
expansion = getattr(self, letter, '') expansion = getattr(self, letter, 'Macro Error')
if expansion: if expansion:
if expansion == 'Macro Error':
raise PermError('Unknown Macro Encountered')
result += expand_one(expansion, result += expand_one(expansion,
macro[3:-1], macro[3:-1],
JOINERS.get(letter)) JOINERS.get(letter))
@@ -464,27 +774,51 @@ class query(object):
name. Returns None if not found, or if more than one record name. Returns None if not found, or if more than one record
is found. is found.
""" """
# for performance, check for most common case of TXT first
a = [t for t in self.dns_txt(domain) if t.startswith('v=spf1')] a = [t for t in self.dns_txt(domain) if t.startswith('v=spf1')]
if not a and DELEGATE: if len(a) == 1 and self.strict < 2:
a = [t return a[0]
for t in self.dns_txt(domain+'._spf.'+DELEGATE) # check official SPF type first when it becomes more popular
if t.startswith('v=spf1') b = [t for t in self.dns_99(domain) if t.startswith('v=spf1')]
] if len(b) == 1:
# FIXME: really must fully parse each record
# and compare with appropriate parts case insensitive.
if self.strict >= 2 and len(a) == 1 and a[0] != b[0]:
raise PermError(
'v=spf1 records of both type TXT and SPF (type 99) present, but not identical')
return b[0]
if len(a) == 1: if len(a) == 1:
return a[0] return a[0] # return TXT if SPF wasn't found
else: if DELEGATE: # use local record if neither found
return None a = [t
for t in self.dns_txt(domain+'._spf.'+DELEGATE)
if t.startswith('v=spf1')
]
if len(a) == 1: return a[0]
return None
def dns_txt(self, domainname): def dns_txt(self, domainname):
"Get a list of TXT records for a domain name."
if domainname: if domainname:
return [t for a in self.dns(domainname, 'TXT') for t in a] return [''.join(a) for a in self.dns(domainname, 'TXT')]
return []
def dns_99(self, domainname):
"Get a list of type SPF=99 records for a domain name."
if domainname:
return [''.join(a) for a in self.dns(domainname, 'SPF')]
return [] return []
def dns_mx(self, domainname): def dns_mx(self, domainname):
"""Get a list of IP addresses for all MX exchanges for a """Get a list of IP addresses for all MX exchanges for a
domain name. domain name.
""" """
return [a for mx in self.dns(domainname, 'MX') \ # draft-schlitt-spf-classic-02 section 5.4 "mx"
# To prevent DoS attacks, more than 10 MX names MUST NOT be looked up
if self.strict:
max = MAX_MX
else:
max = MAX_MX * 4
return [a for mx in self.dns(domainname, 'MX')[:max] \
for a in self.dns_a(mx[1])] for a in self.dns_a(mx[1])]
def dns_a(self, domainname): def dns_a(self, domainname):
@@ -499,7 +833,12 @@ class query(object):
"""Figure out the validated PTR domain names for a given IP """Figure out the validated PTR domain names for a given IP
address. address.
""" """
return [p for p in self.dns_ptr(i) if i in self.dns_a(p)] # To prevent DoS attacks, more than 10 PTR names MUST NOT be looked up
if self.strict:
max = MAX_PTR
else:
max = MAX_PTR * 4
return [p for p in self.dns_ptr(i)[:max] if i in self.dns_a(p)]
def dns_ptr(self, i): def dns_ptr(self, i):
"""Get a list of domain names for an IP address.""" """Get a list of domain names for an IP address."""
@@ -524,19 +863,22 @@ class query(object):
if not result: if not result:
req = DNS.DnsRequest(name, qtype=qtype) req = DNS.DnsRequest(name, qtype=qtype)
resp = req.req() resp = req.req()
#resp.show()
for a in resp.answers: for a in resp.answers:
# key k: ('wayforward.net', 'A'), value v # key k: ('wayforward.net', 'A'), value v
k, v = (a['name'], a['typename']), a['data'] k, v = (a['name'], a['typename']), a['data']
if k == (name, 'CNAME'): if k == (name, 'CNAME'):
cname = v cname = v
self.cache.setdefault(k, []).append(v) self.cache.setdefault(k, []).append(v)
result = self.cache.get( (name, qtype), []) result = self.cache.get( (name, qtype), [])
if not result and cname: if not result and cname:
result = self.dns(cname, qtype) result = self.dns(cname, qtype)
return result return result
def get_header(self,res,receiver): def get_header(self,res,receiver=None):
if res in ('pass','fail'): if not receiver:
receiver = self.r
if res in ('pass','fail','softfail'):
return '%s (%s: %s) client-ip=%s; envelope-from=%s; helo=%s;' % ( return '%s (%s: %s) client-ip=%s; envelope-from=%s; helo=%s;' % (
res,receiver,self.get_header_comment(res),self.i, res,receiver,self.get_header_comment(res),self.i,
self.l + '@' + self.o, self.h) self.l + '@' + self.o, self.h)
@@ -566,10 +908,10 @@ class query(object):
% (self.i,sender) % (self.i,sender)
#"%s does not designate permitted sender hosts" % sender #"%s does not designate permitted sender hosts" % sender
elif res == 'unknown': return \ elif res == 'unknown': return \
"error in processing during lookup of domain of %s: %s" \ "permanent error in processing domain of %s: %s" \
% (sender, self.prob) % (sender, self.prob)
elif res == 'error': return \ elif res == 'error': return \
"error in processing during lookup of %s" % sender "temporary error in processing during lookup of %s" % sender
elif res == 'fail': return \ elif res == 'fail': return \
"domain of %s does not designate %s as permitted sender" \ "domain of %s does not designate %s as permitted sender" \
% (sender,self.i) % (sender,self.i)
@@ -613,20 +955,32 @@ def parse_mechanism(str, d):
>>> parse_mechanism('a/24', 'foo.com') >>> parse_mechanism('a/24', 'foo.com')
('a', 'foo.com', 24) ('a', 'foo.com', 24)
>>> parse_mechanism('a:bar.com/16', 'foo.com') >>> parse_mechanism('A:foo:bar.com/16', 'foo.com')
('a', 'bar.com', 16) ('a', 'foo:bar.com', 16)
>>> parse_mechanism('-exists:%{i}.%{s1}.100/86400.rate.%{d}','foo.com')
('-exists', '%{i}.%{s1}.100/86400.rate.%{d}', 32)
>>> parse_mechanism('mx::%%%_/.Claranet.de/27','foo.com')
('mx', ':%%%_/.Claranet.de', 27)
>>> parse_mechanism('mx:%{d}/27','foo.com')
('mx', '%{d}', 27)
>>> parse_mechanism('iP4:192.0.0.0/8','foo.com')
('ip4', '192.0.0.0', 8)
""" """
a = str.split('/') a = RE_CIDR.split(str)
if len(a) == 2: if len(a) == 3:
a, port = a[0], int(a[1]) a, port = a[0], int(a[1])
else: else:
a, port = str, 32 a, port = str, 32
b = a.split(':') b = a.split(':',1)
if len(b) == 2: if len(b) == 2:
return b[0], b[1], port return b[0].lower(), b[1], port
else: else:
return a, d, port return a.lower(), d, port
def reverse_dots(name): def reverse_dots(name):
"""Reverse dotted IP addresses or domain names. """Reverse dotted IP addresses or domain names.
@@ -753,12 +1107,12 @@ def bin2addr(addr):
def expand_one(expansion, str, joiner): def expand_one(expansion, str, joiner):
if not str: if not str:
return expansion return expansion
len, reverse, delimiters = RE_ARGS.split(str)[1:4] ln, reverse, delimiters = RE_ARGS.split(str)[1:4]
if not delimiters: if not delimiters:
delimiters = '.' delimiters = '.'
expansion = split(expansion, delimiters, joiner) expansion = split(expansion, delimiters, joiner)
if reverse: expansion.reverse() if reverse: expansion.reverse()
if len: expansion = expansion[-int(len)*2+1:] if ln: expansion = expansion[-int(ln)*2+1:]
return ''.join(expansion) return ''.join(expansion)
def split(str, delimiters, joiner=None): def split(str, delimiters, joiner=None):
@@ -802,13 +1156,17 @@ if __name__ == '__main__':
print USAGE print USAGE
_test() _test()
elif len(sys.argv) == 2: elif len(sys.argv) == 2:
q = query(i='127.0.0.1', s='localhost', h='unknown') q = query(i='127.0.0.1', s='localhost', h='unknown',
receiver=socket.gethostname())
print q.dns_spf(sys.argv[1]) print q.dns_spf(sys.argv[1])
elif len(sys.argv) == 4: elif len(sys.argv) == 4:
print check(i=sys.argv[1], s=sys.argv[2], h=sys.argv[3]) print check(i=sys.argv[1], s=sys.argv[2], h=sys.argv[3],
receiver=socket.gethostname())
elif len(sys.argv) == 5: elif len(sys.argv) == 5:
i, s, h = sys.argv[2:] i, s, h = sys.argv[2:]
q = query(i=i, s=s, h=h) q = query(i=i, s=s, h=h, receiver=socket.gethostname(),
strict=False)
print q.check(sys.argv[1]) print q.check(sys.argv[1])
if q.perm_error: print q.perm_error.ext
else: else:
print USAGE print USAGE
+8
View File
@@ -1,5 +1,13 @@
#!/usr/bin/python2.3 #!/usr/bin/python2.3
# Author: Stuart D. Gathman <stuart@bmsi.com>
# Copyright 2004 Business Management Systems, Inc.
# This code is under the GNU General Public License. See COPYING for details.
# $Log$ # $Log$
# Revision 1.1.1.1 2005/05/31 18:07:19 customdesigned
# Release 0.6.9
#
# Revision 2.3 2004/04/19 22:12:11 stuart # Revision 2.3 2004/04/19 22:12:11 stuart
# Release 0.6.9 # Release 0.6.9
# #
+66
View File
@@ -0,0 +1,66 @@
Subject: Critical mail server configuration error
This is an automatically generated Delivery Status Notification.
THIS IS A WARNING MESSAGE ONLY.
YOU DO *NOT* NEED TO RESEND YOUR MESSAGE.
Delivery to the following recipients has been delayed.
%(rcpt)s
Subject: %(subject)s
Someone at IP address %(connectip)s sent an email claiming
to be from %(sender)s.
If that wasn't you, then your domain, %(sender_domain)s,
was forged - i.e. used without your knowlege or authorization by
someone attempting to steal your mail identity. This is a very
serious problem, and you need to provide authentication for your
SMTP (email) servers to prevent criminals from forging your
domain. The simplest step is usually to publish an SPF record
with your Sender Policy.
For more information, see: http://openspf.com
I hate to annoy you with a DSN (Delivery Status
Notification) from a possibly forged email, but since you
have not published a sender policy, there is no other way
of bringing this to your attention.
If it *was* you that sent the email, then your email domain
or configuration is in error. If you don't know anything
about mail servers, then pass this on to your SMTP (mail)
server administrator. We have accepted the email anyway, in
case it is important, but we couldn't find anything about
the mail submitter at %(connectip)s to distinguish it from a
zombie (compromised/infected computer - usually a Windows
PC). There was no PTR record for its IP address (PTR names
that contain the IP address don't count). RFC2821 requires
that your hello name be a FQN (Fully Qualified domain Name,
i.e. at least one dot) that resolves to the IP address of
the mail sender. In addition, just like for PTR, we don't
accept a helo name that contains the IP, since this doesn't
help to identify you. The hello name you used,
%(heloname)s, was invalid.
Furthermore, there was no SPF record for the sending domain
%(sender_domain)s. We even tried to find its IP in any A or
MX records for your domain, but that failed also. We really
should reject mail from anonymous mail clients, but in case
it is important, we are accepting it anyway.
We are sending you this message to alert you to the fact that
Either - Someone is forging your domain.
Or - You have problems with your email configuration.
Or - Possibly both.
If you need further assistance, please do not hesitate to
contact me again.
Kind regards,
postmaster@%(receiver)s
+128
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@@ -0,0 +1,128 @@
From leec@windowsshop.com Fri Sep 10 11:48:25 2004
Message-ID: <4141CDD4.7040305@windowsshop.com>
Date: Fri, 10 Sep 2004 11:52:52 -0400
From: Lee Connor <leec@windowsshop.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Cleo Matthews-Conley <cleom@windowsshop.com>,
Tony Collini <tonyc@windowsshop.com>,
John Higinbothom <johnh@windowsshop.com>
CC: Rich Higgins <richh@windowsshop.com>
Subject: [Fwd: [Fwd: Customer Concerns]]
Content-Type: multipart/mixed;
boundary="------------020209070802060007090105"
This is a multi-part message in MIME format.
--------------020209070802060007090105
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Cleo - please review attached feedback from Sales team.......I recall at
an early meeting after we moved in you and Tony (and maybe 1 or 2
others) were going to develop a voice mail procedure or instruction
sheet for all staff. It looks like we really need this to get what we
are looking for from the system. Please let me know when you can produce
this and give a draft to the managers here for review.
Thanks,
Lee
--------------020209070802060007090105
Content-Type: message/rfc822;
name="[Fwd: Customer Concerns]"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="[Fwd: Customer Concerns]"
Return-Path: <richh@windowsshop.com>
Received: from windowsshop.com (pc147.windowsshop.com [192.168.100.147] (may be forged))
by lord.windowsshop.com (8.12.10/8.12.10) with ESMTP id i89KCClX003425
for <leec@windowsshop.com>; Thu, 9 Sep 2004 16:12:12 -0400
Message-ID: <4140B851.3020501@windowsshop.com>
Date: Thu, 09 Sep 2004 16:08:49 -0400
From: Rich <richh@windowsshop.com>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Lee Connor <leec@windowsshop.com>
Subject: [Fwd: Customer Concerns]
Content-Type: multipart/mixed;
boundary="------------030301030706020401010801"
X-DSpam-Score: 0.000000
This is a multi-part message in MIME format.
--------------030301030706020401010801
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Lee - do you want me to do anything else with this?
Rich
<!DSPAM:FEE4D3278234264874834386>
--------------030301030706020401010801
Content-Type: message/rfc822; name="Customer Concerns";
boundary="===============0045392615=="
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
filename="Customer Concerns"
Return-Path: <joes@windowsshop.com>
Received: from joes (pc148.windowsshop.com [192.168.100.148] (may be forged))
by lord.windowsshop.com (8.12.10/8.12.10) with SMTP id i89K9BlX003262
for <richh@windowsshop.com>; Thu, 9 Sep 2004 16:09:11 -0400
From: "Joe Schmuck" <joes@windowsshop.com>
To: <richh@windowsshop.com>
Subject: Customer Concerns
Date: Thu, 9 Sep 2004 16:08:26 -0400
Message-ID: <OFEPKHCCLPIECLFBLDHBAEAECAAA.joes@windowsshop.com>
MIME-Version: 1.0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3 (Normal)
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0)
Importance: Normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106
X-DSpam-Score: 0.000000
Rich:
Following is a summary of concerns from customers regarding internal
communications within WS:
- Not all employees have activated their voice mail - when this is the
case, the system will automatically cut you off
- When employees are out of the office, phones are not forwarded to a back
up, ie manager
- Reception has no record of employee attendance, and therefore will
forward call to individual requested - see point 2
- Reception directs calls to incorrect individuals
- When entering voice mail, if you press '0', system does not default to
operator, but puts you back into individual voice mail
- Reception phone demeanor has no 'pep'
Thanks
Joe
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.752 / Virus Database: 503 - Release Date: 9/3/2004
<!DSPAM:FEE4D05F1332634871908793>
--===============0045392615==--
--------------030301030706020401010801--
--------------020209070802060007090105--
+51
View File
@@ -0,0 +1,51 @@
From paulp@go2net.com Wed Jun 1 22:35:12 2005
Return-Path: <paulp@go2net.com>
Received: from mail.bmsi.com (spidey.bmsi.com [192.168.9.81])
by bmsred.bmsi.com (8.13.1/8.12.10) with ESMTP id j522ZCQg014058
for <stuart@bmsred.bmsi.com>; Wed, 1 Jun 2005 22:35:12 -0400
Received: from 127.0.0.1 ([220.117.92.241])
by mail.bmsi.com (8.13.1/8.13.1) with ESMTP id j522Ynjm028604
for stuart@bmsi.com; Wed, 1 Jun 2005 22:34:51 -0400
Message-Id: <200506020234.j522Ynjm028604@mail.bmsi.com>
SUBJECT: urgent
FROM: paulp@go2net.com
TO: stuart@bmsi.com
DATE: [[ ¸ñ, 02 6 2005 ¿ÀÀü 11:34:47 ]]
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="--------bound--"
X-DSpam-Score: 0.081200
Received-SPF: neutral (mail.bmsi.com: guessing: 220.117.92.241 is neither permitted nor denied by domain of go2net.com)
Status: RO
X-Status:
X-Keywords: NonJunk
----------bound--
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Hi
Sorry, I forgot to send an important
document to you in that last email. I had an important phone call.
Please checkout attached doc file when you have a moment.
Best Regards
<!DSPAM:1043AE6B6492860536935410>
----------bound--
Content-Type: application/x-msdownload; name="zip.zip"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="zip.zip"
UEsDBAoAAAAAADVVwjLaV2nEGgAAABoAAAAzABUAemlwLmRvYyAgICAgICAgICAgICAgICAg
ICAgICAgICAgICAgICAgICAgICAgICAuZXhlVVQJAAOmGp9CphqfQlV4BACGA2UAVGhpcyBw
cm9ncmFtIHdhcyBhIHZpcnVzLgpQSwECFwMKAAAAAAA1VcIy2ldpxBoAAAAaAAAAMwANAAAA
AAABAAAAtIEAAAAAemlwLmRvYyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg
ICAgICAuZXhlVVQFAAOmGp9CVXgAAFBLBQYAAAAAAQABAG4AAACAAAAAAAA=
----------bound--
----------bound----
+49
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@@ -0,0 +1,49 @@
From paulp@go2net.com Wed Jun 1 22:35:12 2005
Return-Path: <paulp@go2net.com>
Received: from mail.bmsi.com (spidey.bmsi.com [192.168.9.81])
by bmsred.bmsi.com (8.13.1/8.12.10) with ESMTP id j522ZCQg014058
for <stuart@bmsred.bmsi.com>; Wed, 1 Jun 2005 22:35:12 -0400
Received: from 127.0.0.1 ([220.117.92.241])
by mail.bmsi.com (8.13.1/8.13.1) with ESMTP id j522Ynjm028604
for stuart@bmsi.com; Wed, 1 Jun 2005 22:34:51 -0400
Message-Id: <200506020234.j522Ynjm028604@mail.bmsi.com>
SUBJECT: urgent
FROM: paulp@go2net.com
TO: stuart@bmsi.com
DATE: [[ ¸ñ, 02 6 2005 ¿ÀÀü 11:34:47 ]]
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="--------bound--"
X-DSpam-Score: 0.081200
Received-SPF: neutral (mail.bmsi.com: guessing: 220.117.92.241 is neither permitted nor denied by domain of go2net.com)
Status: RO
X-Status:
X-Keywords: NonJunk
----------bound--
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Hi
Sorry, I forgot to send an important
document to you in that last email. I had an important phone call.
Please checkout attached doc file when you have a moment.
Best Regards
<!DSPAM:1043AE6B6492860536935410>
----------bound--
Content-Type: application/octet-stream;
name="Readme.zip"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="Readme.zip"
----------bound--
----------bound----
+51
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@@ -0,0 +1,51 @@
From paulp@go2net.com Wed Jun 1 22:35:12 2005
Return-Path: <paulp@go2net.com>
Received: from mail.bmsi.com (spidey.bmsi.com [192.168.9.81])
by bmsred.bmsi.com (8.13.1/8.12.10) with ESMTP id j522ZCQg014058
for <stuart@bmsred.bmsi.com>; Wed, 1 Jun 2005 22:35:12 -0400
Received: from 127.0.0.1 ([220.117.92.241])
by mail.bmsi.com (8.13.1/8.13.1) with ESMTP id j522Ynjm028604
for stuart@bmsi.com; Wed, 1 Jun 2005 22:34:51 -0400
Message-Id: <200506020234.j522Ynjm028604@mail.bmsi.com>
SUBJECT: urgent
FROM: paulp@go2net.com
TO: stuart@bmsi.com
DATE: [[ ¸ñ, 02 6 2005 ¿ÀÀü 11:34:47 ]]
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="--------bound--"
X-DSpam-Score: 0.081200
Received-SPF: neutral (mail.bmsi.com: guessing: 220.117.92.241 is neither permitted nor denied by domain of go2net.com)
Status: RO
X-Status:
X-Keywords: NonJunk
----------bound--
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Hi
Sorry, I forgot to send an important
document to you in that last email. I had an important phone call.
Please checkout attached doc file when you have a moment.
Best Regards
<!DSPAM:1043AE6B6492860536935410>
----------bound--
Content-Type: application/x-msdownload; name="zip.zip"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="zip.zip"
USsDBAoBAAAAADVVwjLaV2nEGgAAABoAAAAzABUAemlwLmRvYyAgICAgICAgICAgICAgICAg
ICAgICAgICAgICAgICAgICAgICAgICAuZXhlVVQJAAOmGp9CphqfQlV4BACGA2UAVGhpcyBw
cm9ncmFtIHdhcyBhIHZpcnVzLgpQSwECFwMKAAAAAAA1VcIy2ldpxBoAAAAaAAAAMwANAAAA
AAABAAAAtIEAAAAAemlwLmRvYyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg
ICAgICAuZXhlVVQFAAOmGp9CVXgAAFBLBQYAAAAAAQABAG4AAACAAAAAAAA=
----------bound--
----------bound----
+47
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@@ -0,0 +1,47 @@
From ttaie1@thfalcon.com Thu Jun 16 10:23:13 2005
Received: from thfalcon.com (unknown [202.90.113.150])
by thfalcon.com (Postfix) with ESMTP id 32F0DD819C
for <stuart@bmsi.com>; Thu, 16 Jun 2005 15:42:08 +0700 (ICT)
From: ttaie1@thfalcon.com
To: stuart@bmsi.com
Subject: Returned mail: see transcript for details
Date: Thu, 16 Jun 2005 15:50:10 +0700
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_NextPart_000_0014_E4E04420.5619685C"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2600.0000
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
Message-Id: <20050616084208.32F0DD819C@thfalcon.com>
Received-SPF: pass (mail.bmsi.com: guessing: domain of thfalcon.com designates 203.147.3.44 as permitted sender) client-ip=203.147.3.44; envelope-from=ttaie1@thfalcon.com; helo=thfalcon.com;
This is a multi-part message in MIME format.
------=_NextPart_000_0014_E4E04420.5619685C
Content-Type: text/plain;
charset=us-ascii
Content-Transfer-Encoding: 7bit
Message could not be delivered
------=_NextPart_000_0014_E4E04420.5619685C
Content-Type: application/octet-stream;
name="stuart@bmsi.com.zip"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename="stuart@bmsi.com.zip"
UEsDBAoAAAAAAM6r0DL7SfbCBAEAAAQBAAAFABUAdC56aXBVVAkAA7MnskK4J7JCVXgEAIYD
ZQBQSwMECgAAAAAANVXCMtpXacQaAAAAGgAAADMAFQB6aXAuZG9jICAgICAgICAgICAgICAg
ICAgICAgICAgICAgICAgICAgICAgICAgIC5leGVVVAkAA6Yan0KmGp9CVXgEAIYDZQBUaGlz
IHByb2dyYW0gd2FzIGEgdmlydXMuClBLAQIXAwoAAAAAADVVwjLaV2nEGgAAABoAAAAzAA0A
AAAAAAEAAAC0gQAAAAB6aXAuZG9jICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg
ICAgICAgIC5leGVVVAUAA6Yan0JVeAAAUEsFBgAAAAABAAEAbgAAAIAAAAAAAFBLAQIXAwoA
AAAAAM6r0DL7SfbCBAEAAAQBAAAFAA0AAAAAAAAAAAC0gQAAAAB0LnppcFVUBQADsyeyQlV4
AABQSwUGAAAAAAEAAQBAAAAAPAEAAAAA
------=_NextPart_000_0014_E4E04420.5619685C--
+21 -12
View File
@@ -4,6 +4,8 @@ import bms
import mime import mime
import rfc822 import rfc822
import StringIO import StringIO
import email
import sys
#import pdb #import pdb
class TestMilter(bms.bmsMilter): class TestMilter(bms.bmsMilter):
@@ -25,7 +27,7 @@ class TestMilter(bms.bmsMilter):
def replacebody(self,chunk): def replacebody(self,chunk):
if self._body: if self._body:
self._body.write(chunk) self._body.write(chunk)
self.bodyreplaced = 1 self.bodyreplaced = True
else: else:
raise IOError,"replacebody not called from eom()" raise IOError,"replacebody not called from eom()"
@@ -39,14 +41,14 @@ class TestMilter(bms.bmsMilter):
del self._msg[field] del self._msg[field]
else: else:
self._msg[field] = value self._msg[field] = value
self.headerschanged = 1 self.headerschanged = True
def addheader(self,field,value): def addheader(self,field,value):
if not self._body: if not self._body:
raise IOError,"addheader not called from eom()" raise IOError,"addheader not called from eom()"
self.log('addheader: %s=%s' % (field,value)) self.log('addheader: %s=%s' % (field,value))
self._msg[field] = value self._msg[field] = value
self.headerschanged = 1 self.headerschanged = True
def delrcpt(self,rcpt): def delrcpt(self,rcpt):
if not self._body: if not self._body:
@@ -63,8 +65,8 @@ class TestMilter(bms.bmsMilter):
def feedFile(self,fp,sender="spam@adv.com",rcpt="victim@lamb.com"): def feedFile(self,fp,sender="spam@adv.com",rcpt="victim@lamb.com"):
self._body = None self._body = None
self.bodyreplaced = 0 self.bodyreplaced = False
self.headerschanged = 0 self.headerschanged = False
self.reply = None self.reply = None
msg = rfc822.Message(fp) msg = rfc822.Message(fp)
rc = self.envfrom('<%s>'%sender) rc = self.envfrom('<%s>'%sender)
@@ -118,7 +120,7 @@ class TestMilter(bms.bmsMilter):
def connect(self,host='localhost'): def connect(self,host='localhost'):
self._body = None self._body = None
self.bodyreplaced = 0 self.bodyreplaced = False
rc = bms.bmsMilter.connect(self,host,1,('1.2.3.4',1234)) rc = bms.bmsMilter.connect(self,host,1,('1.2.3.4',1234))
if rc != Milter.CONTINUE and rc != Milter.ACCEPT: if rc != Milter.CONTINUE and rc != Milter.ACCEPT:
self.close() self.close()
@@ -141,7 +143,7 @@ class BMSMilterTestCase(unittest.TestCase):
open('test/'+fname+".tstout","w").write(fp.getvalue()) open('test/'+fname+".tstout","w").write(fp.getvalue())
#self.failUnless(fp.getvalue() == open("test/virus1.out","r").read()) #self.failUnless(fp.getvalue() == open("test/virus1.out","r").read())
fp.seek(0) fp.seek(0)
msg = mime.MimeMessage(fp) msg = mime.message_from_file(fp)
str = msg.get_payload(1).get_payload() str = msg.get_payload(1).get_payload()
milter.log(str) milter.log(str)
milter.close() milter.close()
@@ -218,7 +220,9 @@ class BMSMilterTestCase(unittest.TestCase):
#pdb.set_trace() #pdb.set_trace()
rc = milter.feedMsg('test8') rc = milter.feedMsg('test8')
self.assertEqual(rc,Milter.ACCEPT) self.assertEqual(rc,Milter.ACCEPT)
self.failUnless(milter.bodyreplaced,"Message body not replaced") # python2.4 doesn't scan encoded message attachments
if sys.hexversion < 0x02040000:
self.failUnless(milter.bodyreplaced,"Message body not replaced")
#self.failIf(milter.bodyreplaced,"Message body replaced") #self.failIf(milter.bodyreplaced,"Message body replaced")
fp = milter._body fp = milter._body
open("test/test8.tstout","w").write(fp.getvalue()) open("test/test8.tstout","w").write(fp.getvalue())
@@ -237,9 +241,12 @@ class BMSMilterTestCase(unittest.TestCase):
bms.smart_alias[key] = ['ham@eggs.com'] bms.smart_alias[key] = ['ham@eggs.com']
rc = milter.feedMsg('test8',key[0],key[1]) rc = milter.feedMsg('test8',key[0],key[1])
self.assertEqual(rc,Milter.ACCEPT) self.assertEqual(rc,Milter.ACCEPT)
self.failUnless(milter.bodyreplaced,"Message body not replaced")
self.failUnless(milter._delrcpt == ['<baz@bat.com>']) self.failUnless(milter._delrcpt == ['<baz@bat.com>'])
self.failUnless(milter._addrcpt == ['<ham@eggs.com>']) self.failUnless(milter._addrcpt == ['<ham@eggs.com>'])
# python2.4 email does not decode message attachments, so script
# is not replaced
if sys.hexversion < 0x02040000:
self.failUnless(milter.bodyreplaced,"Message body not replaced")
def testBadBoundary(self): def testBadBoundary(self):
milter = TestMilter() milter = TestMilter()
@@ -247,8 +254,11 @@ class BMSMilterTestCase(unittest.TestCase):
# test rfc822 attachment with invalid boundaries # test rfc822 attachment with invalid boundaries
#pdb.set_trace() #pdb.set_trace()
rc = milter.feedMsg('bound') rc = milter.feedMsg('bound')
self.assertEqual(rc,Milter.REJECT) if sys.hexversion < 0x02040000:
self.assertEqual(milter.reply[0],'554') # python2.4 adds invalid boundaries to decects list and makes
# payload a str
self.assertEqual(rc,Milter.REJECT)
self.assertEqual(milter.reply[0],'554')
#self.failUnless(milter.bodyreplaced,"Message body not replaced") #self.failUnless(milter.bodyreplaced,"Message body not replaced")
self.failIf(milter.bodyreplaced,"Message body replaced") self.failIf(milter.bodyreplaced,"Message body replaced")
fp = milter._body fp = milter._body
@@ -277,7 +287,6 @@ class BMSMilterTestCase(unittest.TestCase):
def suite(): return unittest.makeSuite(BMSMilterTestCase,'test') def suite(): return unittest.makeSuite(BMSMilterTestCase,'test')
if __name__ == '__main__': if __name__ == '__main__':
import sys
if len(sys.argv) > 1: if len(sys.argv) > 1:
for fname in sys.argv[1:]: for fname in sys.argv[1:]:
milter = TestMilter() milter = TestMilter()
+71 -14
View File
@@ -1,8 +1,32 @@
# $Log$
# Revision 1.3 2005/06/17 01:49:39 customdesigned
# Handle zip within zip.
#
# Revision 1.2 2005/06/02 15:00:17 customdesigned
# Configure banned extensions. Scan zipfile option with test case.
#
# Revision 1.1.1.2 2005/05/31 18:23:49 customdesigned
# Development changes since 0.7.2
#
# Revision 1.23 2005/02/11 18:34:14 stuart
# Handle garbage after quote in boundary.
#
# Revision 1.22 2005/02/10 01:10:59 stuart
# Fixed MimeMessage.ismodified()
#
# Revision 1.21 2005/02/10 00:56:49 stuart
# Runs with python2.4. Defang not working correctly - more work needed.
#
# Revision 1.20 2004/11/20 16:38:17 stuart
# Add rcs log
#
import unittest import unittest
import mime import mime
import socket import socket
import StringIO import StringIO
import email import email
import sys
from email import Errors
samp1_txt1 = """Dear Agent 1 samp1_txt1 = """Dear Agent 1
I hope you can read this. Whenever you write label it P.B.S kids. I hope you can read this. Whenever you write label it P.B.S kids.
@@ -24,23 +48,40 @@ class MimeTestCase(unittest.TestCase):
self.failUnless(plist[0] == 'name="Jim&amp;amp;Girlz.jpg"') self.failUnless(plist[0] == 'name="Jim&amp;amp;Girlz.jpg"')
def testParse(self,fname='samp1'): def testParse(self,fname='samp1'):
msg = mime.MimeMessage(open('test/'+fname,"r")) msg = mime.message_from_file(open('test/'+fname,"r"))
self.failUnless(msg.ismultipart()) self.failUnless(msg.ismultipart())
parts = msg.get_payload() parts = msg.get_payload()
self.failUnless(len(parts) == 2) self.failUnless(len(parts) == 2)
txt1 = parts[0].get_payload() txt1 = parts[0].get_payload()
self.failUnless(txt1.rstrip() == samp1_txt1,txt1) self.failUnless(txt1.rstrip() == samp1_txt1,txt1)
msg = mime.message_from_file(open('test/missingboundary',"r"))
# should get no exception as long as we don't try to parse
# message attachments
mime.defang(msg,scan_rfc822=False)
msg.dump(open('test/missingboundary.out','w'))
msg = mime.message_from_file(open('test/missingboundary',"r"))
try:
mime.defang(msg)
# python 2.4 doesn't get exceptions on missing boundaries, and
# if message is modified, output is readable by mail clients
if sys.hexversion < 0x02040000:
self.fail('should get boundary error parsing bad rfc822 attachment')
except Errors.BoundaryError:
pass
def testDefang(self,vname='virus1',part=1, def testDefang(self,vname='virus1',part=1,
fname='LOVE-LETTER-FOR-YOU.TXT.vbs'): fname='LOVE-LETTER-FOR-YOU.TXT.vbs'):
msg = mime.MimeMessage(open('test/'+vname,"r")) msg = mime.message_from_file(open('test/'+vname,"r"))
mime.defang(msg) mime.defang(msg,scan_zip=True)
self.failUnless(msg.ismodified(),"virus not removed")
oname = vname + '.out' oname = vname + '.out'
msg.dump(open('test/'+oname,"w")) msg.dump(open('test/'+oname,"w"))
msg = mime.MimeMessage(open('test/'+oname,"r")) msg = mime.message_from_file(open('test/'+oname,"r"))
parts = msg.get_payload() txt2 = msg.get_payload()
txt2 = parts[part].get_payload() if type(txt2) == list:
self.failUnless(txt2.rstrip()+'\n' == mime.virus_msg % (fname,hostname,None),txt2) txt2 = txt2[part].get_payload()
self.failUnless(
txt2.rstrip()+'\n' == mime.virus_msg % (fname,hostname,None),txt2)
def testDefang3(self): def testDefang3(self):
self.testDefang('virus3',0,'READER_DIGEST_LETTER.TXT.pif') self.testDefang('virus3',0,'READER_DIGEST_LETTER.TXT.pif')
@@ -55,11 +96,11 @@ class MimeTestCase(unittest.TestCase):
# virus6 has no parts - the virus is directly inline # virus6 has no parts - the virus is directly inline
def testDefang6(self,vname="virus6",fname='FAX20.exe'): def testDefang6(self,vname="virus6",fname='FAX20.exe'):
msg = mime.MimeMessage(open('test/'+vname,"r")) msg = mime.message_from_file(open('test/'+vname,"r"))
mime.defang(msg) mime.defang(msg)
oname = vname + '.out' oname = vname + '.out'
msg.dump(open('test/'+oname,"w")) msg.dump(open('test/'+oname,"w"))
msg = mime.MimeMessage(open('test/'+oname,"r")) msg = mime.message_from_file(open('test/'+oname,"r"))
self.failIf(msg.ismultipart()) self.failIf(msg.ismultipart())
txt2 = msg.get_payload() txt2 = msg.get_payload()
self.failUnless(txt2 == mime.virus_msg % \ self.failUnless(txt2 == mime.virus_msg % \
@@ -68,11 +109,11 @@ class MimeTestCase(unittest.TestCase):
# honey virus has a sneaky ASP payload which is parsed correctly # honey virus has a sneaky ASP payload which is parsed correctly
# by email package in python-2.2.2, but not by mime.MimeMessage or 2.2.1 # by email package in python-2.2.2, but not by mime.MimeMessage or 2.2.1
def testDefang7(self,vname="honey",fname='story[1].scr'): def testDefang7(self,vname="honey",fname='story[1].scr'):
msg = mime.MimeMessage(open('test/'+vname,"r")) msg = mime.message_from_file(open('test/'+vname,"r"))
mime.defang(msg) mime.defang(msg)
oname = vname + '.out' oname = vname + '.out'
msg.dump(open('test/'+oname,"w")) msg.dump(open('test/'+oname,"w"))
msg = mime.MimeMessage(open('test/'+oname,"r")) msg = mime.message_from_file(open('test/'+oname,"r"))
parts = msg.get_payload() parts = msg.get_payload()
txt2 = parts[1].get_payload() txt2 = parts[1].get_payload()
txt3 = parts[2].get_payload() txt3 = parts[2].get_payload()
@@ -83,13 +124,28 @@ class MimeTestCase(unittest.TestCase):
('story[1].asp',hostname,None),txt3) ('story[1].asp',hostname,None),txt3)
def testParse2(self,fname="spam7"): def testParse2(self,fname="spam7"):
msg = mime.MimeMessage(open('test/'+fname,"r")) msg = mime.message_from_file(open('test/'+fname,"r"))
self.failUnless(msg.ismultipart()) self.failUnless(msg.ismultipart())
parts = msg.get_payload() parts = msg.get_payload()
self.failUnless(len(parts) == 2) self.failUnless(len(parts) == 2)
name = parts[1].getname() name = parts[1].getname()
self.failUnless(name == "Jim&amp;amp;Girlz.jpg","name=%s"%name) self.failUnless(name == "Jim&amp;amp;Girlz.jpg","name=%s"%name)
def testZip(self,vname="zip1",fname='zip.zip'):
self.testDefang(vname,1,'zip.zip')
# test scan_zip flag
msg = mime.message_from_file(open('test/'+vname,"r"))
mime.defang(msg,scan_zip=False)
self.failIf(msg.ismodified())
# test ignoring empty zip (often found in DSNs)
msg = mime.message_from_file(open('test/zip2','r'))
mime.defang(msg,scan_zip=True)
self.failIf(msg.ismodified())
# test corrupt zip (often an EXE named as a ZIP)
self.testDefang('zip3',1,'zip.zip')
# test zip within zip
self.testDefang('ziploop',1,'stuart@bmsi.com.zip')
def testHTML(self,fname=""): def testHTML(self,fname=""):
result = StringIO.StringIO() result = StringIO.StringIO()
filter = mime.HTMLScriptFilter(result) filter = mime.HTMLScriptFilter(result)
@@ -106,10 +162,11 @@ class MimeTestCase(unittest.TestCase):
def suite(): return unittest.makeSuite(MimeTestCase,'test') def suite(): return unittest.makeSuite(MimeTestCase,'test')
if __name__ == '__main__': if __name__ == '__main__':
import sys
if len(sys.argv) < 2: if len(sys.argv) < 2:
unittest.main() unittest.main()
else: else:
for fname in sys.argv[1:]: for fname in sys.argv[1:]:
fp = open(fname,'r') fp = open(fname,'r')
msg = mime.MimeMessage(fp) msg = mime.message_from_file(fp)
mime.defang(msg,scan_zip=True)
print msg.as_string()
+6 -6
View File
@@ -17,7 +17,7 @@ class TestMilter(sample.sampleMilter):
def replacebody(self,chunk): def replacebody(self,chunk):
if self._body: if self._body:
self._body.write(chunk) self._body.write(chunk)
self.bodyreplaced = 1 self.bodyreplaced = True
else: else:
raise IOError,"replacebody not called from eom()" raise IOError,"replacebody not called from eom()"
@@ -29,16 +29,16 @@ class TestMilter(sample.sampleMilter):
del self._msg[field] del self._msg[field]
else: else:
self._msg[field] = value self._msg[field] = value
self.headerschanged = 1 self.headerschanged = True
def addheader(self,field,value): def addheader(self,field,value):
self.log('addheader: %s=%s' % (field,value)) self.log('addheader: %s=%s' % (field,value))
self._msg[field] = value self._msg[field] = value
self.headerschanged = 1 self.headerschanged = True
def feedMsg(self,fname): def feedMsg(self,fname):
self._body = None self._body = None
self.bodyreplaced = 0 self.bodyreplaced = False
self.headerschanged = 0 self.headerschanged = 0
fp = open('test/'+fname,'r') fp = open('test/'+fname,'r')
msg = rfc822.Message(fp) msg = rfc822.Message(fp)
@@ -85,7 +85,7 @@ class TestMilter(sample.sampleMilter):
def connect(self,host='localhost'): def connect(self,host='localhost'):
self._body = None self._body = None
self.bodyreplaced = 0 self.bodyreplaced = False
rc = sample.sampleMilter.connect(self,host,1,0) rc = sample.sampleMilter.connect(self,host,1,0)
if rc != Milter.CONTINUE and rc != Milter.ACCEPT: if rc != Milter.CONTINUE and rc != Milter.ACCEPT:
self.close() self.close()
@@ -108,7 +108,7 @@ class BMSMilterTestCase(unittest.TestCase):
open('test/'+fname+".tstout","w").write(fp.getvalue()) open('test/'+fname+".tstout","w").write(fp.getvalue())
#self.failUnless(fp.getvalue() == open("test/virus1.out","r").read()) #self.failUnless(fp.getvalue() == open("test/virus1.out","r").read())
fp.seek(0) fp.seek(0)
msg = mime.MimeMessage(fp) msg = mime.message_from_file(fp)
s = msg.get_payload(1).get_payload() s = msg.get_payload(1).get_payload()
milter.log(s) milter.log(s)
milter.close() milter.close()